Open-access Vaccination status of individuals with diabetes mellitus treated in Primary Healthcare: a cross-sectional study*

Objective to analyze the vaccination status of individuals with type 1 and type 2 diabetes in Primary Healthcare.

Method cross-sectional, analytical study conducted in 25 Family Health teams with 274 individuals with diabetes. Sociodemographic and clinical variables were evaluated, as well as the full vaccination schedule for each vaccine recommended by the National Immunization Program, through bivariate analysis and logistic regression.

Results among individuals with diabetes mellitus, the following incomplete vaccination rates were found: 69.1% for hepatitis B; 64.6% for diphtheria and tetanus; 74.3% for yellow fever; 87.9% for pneumococcus; 87.9% for varicella; 24.5% for influenza; and 0.7% for COVID-19. The reported reasons for low vaccination rates included not knowing the importance of vaccination and not being informed by healthcare providers. A statistically significant association was found between sociodemographic and clinical profile regarding the full vaccination schedule between the influenza vaccine and age and income; COVID-19 and age, type of diabetes and duration of diabetes.

Conclusion individuals with type 1 and type 2 diabetes treated in Primary Healthcare showed low vaccination rates, which is concerning due to increased vulnerability to vaccine-preventable infections and mortality within this group.

Descriptors
Vaccination Coverage; Diabetes Mellitus, Type 2; Diabetes Mellitus, Type 1; Primary Health Care; Nursing; Vaccines


Highlights

(1) Individuals with diabetes have low vaccination rates.

(2) It is essential to provide vaccination opportunities in health services for individuals with diabetes.

(3) Education for vaccine-prescribing professionals is necessary.

(4) Young people are less likely to get vaccinated than older adults.

(5) It is essential to understand the predisposing factors related to vaccination status.

Objetivo analizar la situación vacunal de personas con diabetes mellitus tipos 1 y 2 en la atención primaria de salud.

Método estudio transversal, analítico, realizado en 25 equipos de Salud de la Familia con 274 personas con diabetes. Se evaluaron las variables sociodemográficas, clínicas y el esquema vacunal completo para cada vacuna recomendada por el Programa Nacional de Inmunizaciones mediante un análisis bivariado y regresión logística.

Resultados de las personas con diabetes mellitus, el 69,1% no contaba con el esquema vacunal completo contra la hepatitis B; el 64,6% contra la difteria y el tétanos; el 74,3% contra la fiebre amarilla; el 87,9% contra el neumococo; el 87,9% contra la varicela; el 24,5% contra influenza y el 0,7% contra la COVID-19. Entre los motivos aludidos para el esquema vacunal incompleto, figuran no conocer la importancia de vacunarse y no haber sido informado por el profesional de la salud. Hubo asociación estáticamente significante entre el perfil sociodemográfico y clínico con relación al esquema vacunal completo entre la vacuna contra la influenza y la edad y los ingresos; COVID-19 y edad, tipo de diabetes y tiempo viviendo con diabetes.

Conclusión las personas con diabetes mellitus tipos 1 y 2 presentaron baja completitud de las vacunas en el contexto de la Atención Primaria de Salud, lo que es preocupante debido a la situación de mayor vulnerabilidad a infecciones inmunoprevenibles y mortalidad en este grupo.

Descriptores
Cobertura de Vacunación; Diabetes Mellitus Tipo 2; Diabetes Mellitus Tipo 1; Atención Primaria de Salud; Enfermería; Vacunas


Destacados

(1) Las personas con diabetes presentan baja completitud de las vacunas.

(2) Es fundamental brindar oportunidades de vacunación en los servicios de salud a las personas con diabetes

(3) Es necesaria la educación de los profesionales que prescriben vacunas.

(4) Los jóvenes tienen menos probabilidades de vacunarse que las personas mayores.

(5) Es fundamental conocer los factores que predisponen a la situación vacunal.

Objetivo analisar a situação vacinal de pessoas com diabetes mellitus tipos 1 e 2 na Atenção Primária à Saúde.

Método estudo transversal, analítico, realizado em 25 equipes de Saúde da Família com 274 pessoas com diabetes. Foram avaliadas as variáveis sociodemográficas e clínicas e esquema vacinal completo para cada vacina recomendada pelo Programa Nacional de Imunizações, por meio de análise bivariada e regressão logística.

Resultados das pessoas com diabetes mellitus, 69,1% não tinham esquema vacinal completo contra hepatite B; 64,6%, contra difteria e tétano; 74,3%, contra febre amarela; 87,9%, contra pneumococo; 87,9%, contra varicela; 24,5%, contra influenza; e 0,7%, contra a covid-19. Entre os motivos referidos para o esquema incompleto, estão não conhecer a importância de vacinar e não ser informado por profissional de saúde. Houve associação estatística significativa entre o perfil sociodemográfico e clínico em relação ao esquema vacinal completo da vacina da influenza e a idade e renda; covid-19 e idade, tipo de diabetes e tempo convivendo com o diabetes.

Conclusão pessoas com diabetes mellitus tipos 1 e 2 apresentaram baixa completude vacinal no contexto da Atenção Primária à Saúde, o que é preocupante devido à situação de maior vulnerabilidade a infecções imunopreveníveis e mortalidade nesse grupo.

Descritores
Cobertura Vacinal; Diabetes Mellitus Tipo 2; Diabetes Mellitus Tipo 1; Atenção Primária à Saúde; Enfermagem; Vacinas


Destaques

(1) Pessoas com diabetes apresentam baixa completude vacinal.

(2) É fundamental oportunizar a vacinação nos serviços de saúde às pessoas com diabetes.

(3) A educação dos profissionais prescritores de vacinas é necessária.

(4) Jovens apresentam menos chance de se vacinar do que idosos.

(5) É imprescindível conhecer os fatores predisponentes à situação vacinal.

Introduction

It is estimated that 537 million adults aged 20 to 79 worldwide have diabetes mellitus (DM). By 2030, the estimate is 643 million, and by 2045, 783 million. Brazil features among the top 10 countries in number of adults (ages 20 to 79) with DM in 2021, ranking 6th(1).

This persistent hyperglycemic condition significantly interferes with the effectiveness of the immune system in these individuals, as it compromises the defense mechanisms, including suppression of cytokine production, defects in phagocytosis, dysfunction of immune cells and an inability to fight microorganisms(2-3). This makes them more susceptible to certain infectious diseases(3) that could be prevented through vaccination, hindering the reduction of morbidity and hospitalization(4).

Immunization of individuals with DM is a fundamental strategy for health protection and promotion of quality of life. It should be noted that they require specialized attention, as they have: 2.5 times higher risk for developing severe acute respiratory syndrome (SARS) from influenza; 1.4 times higher risk for community-acquired pneumonia; 4.6 times higher risk for invasive pneumococcal disease; twice the risk for liver complications when also having chronic hepatitis B; and three times higher risk for herpes zoster.

In accordance with the Brazilian Society of Diabetes (SBD) and the Brazilian Society of Immunization (SBIm), and considering the recommendations from the Special Immunobiology Referral Centers (CRIE), the following vaccines are highly recommended for individuals with diabetes: influenza, 13-valent conjugate pneumococcal (PCV13), 23-valent polysaccharide pneumococcal (PPSV23), hepatitis B, Haemophilus influenzae type b (Hib), varicella and herpes zoster, noting that most are available in the National Immunization Program (PNI).

Among the vaccines available in Primary Healthcare (APS) and the CRIEs are vaccines against influenza, hepatitis B, yellow fever, adult diphtheria and tetanus (dT), measles-mumps-rubella (MMR) and COVID-19. Although the PPSV23, PCV13 and varicella pneumococcal vaccines are recommended, they are not available in APS for individuals with DM, only in the CRIEs with a medical prescription. In turn, the herpes zoster vaccine is available only in the private sector.

Vaccination is an essential pillar of APS and an unquestionable human right. The APS network centers verify vaccination records and status and provide guidance and administration to initiate or update the vaccination schedule according to specific calendars(7). Furthermore, the detailed recording of vaccines received by individuals with DM, along with the assessment of their needs, are essential elements of a holistic clinical evaluation conducted at the first consultation and during annual follow-up(7).

Social determinants influence the decision to get vaccinated. Among the socioeconomic and clinical factors associated with vaccination status, lower educational level and income negatively impact vaccination rates, while older age is associated with higher vaccination rates(8). In addition, factors related to logistics and healthcare providers professionals may pose barriers to vaccination(9).

However, despite the recommendations, Brazilian(10-11) and foreign(12-14) studies assessing vaccination in individuals with DM did not include all the vaccines recommended for this group. In addition to filling this gap, this survey also addresses the perceptions of individuals with DM regarding vaccination as well as the difficulties they face in getting vaccinated. In light of this, planning and implementing strategies to reach the population with DM are essential and urgent. Therefore, the goal was to analyze the vaccination status of individuals with type 1 and type 2 diabetes treated in Primary Healthcare.

Method

Type of study

Cross-sectional, analytical study based on the guidelines of Strengthening the Reporting of Observational Studies in Epidemiology (STROBE)(15).

Study site

The survey was conducted in a municipality in Piauí, Brazil, located in the mid-southern region of the state, with an estimated population of 83,000. APS covers 100% of the municipality and comprises 36 Family Health teams (FHTs), 25 of them in the urban area and 11 in rural areas. These teams make up the Family Health units (FHUs), whose facilities include at least one FHT.

Period

The data were collected between January and July 2022.

Population and sample

The population consisted of patients registered with the 25 FHT of the urban area of the studied municipality. The information system used for registering individuals with DM is the e-SUS APS. Sample calculation was performed for a finite population, stratified by proportion, totaling 2,564 individuals with type 1 DM (DM1) and type 2 DM (DM2), with a sampling error of 5% and a confidence level of 95%. For calculating prevalence, a value of 0.5 was used to achieve the maximum sample size, considering a 95% confidence level and a 5% significance level. One advantage of the proportional stratified sampling was the proportional distribution of registered individuals with DM according to the population size of each FHT. Thus, the final sample consisted of 274 individuals with DM.

Selection criteria

The sample included individuals aged 18 or older, diagnosed with either DM1 or DM2 and registered with the FHUs for at least one year. Individuals who exhibited any cognitive deficit that prevented them from directly answering the questions in the data collection instrument, assessed through the administration of the Mini-Mental State Examination, were excluded.

Data collection

This stage was conducted through the administration of a data collection form during nursing consultations with individuals with DM who agreed to participate in the research by signing the Informed Consent Form (ICF). Home visits were conducted for individuals who did not frequent the FHUs, accompanied by community health agents (ACS). The process involved the following steps: 1. Meetings were held with the ACS and nurses in which participants were drawn based on the available information about individuals with DM in each FHT. 2. The phones numbers of the selected individuals were requested in order to compose the sample. 3. A home visit was scheduled by phone, in which the ICF and household entry agreement were explained. 4. Those who agreed to participate were asked to provide an appropriate environment in the home for the administration of the data collection instrument. 5. The household entry agreement was used to access the residence. Due to the COVID-19 pandemic, protective measures were implemented to ensure the safety of both researchers and interviewees.

Collection instrument and study variables

A data collection instrument titled “Vaccination Status of Individuals with Diabetes in Primary Healthcare” was designed by the researcher, based on the recommendations from the SBD and the SBIm, as well as a literature review on the subject. It contains 30 items, with multiple-choice and open-ended questions, divided into three dimensions. Sociodemographic and clinical characteristics (16 items) include variables such as gender, level of education, income, skin color, religion, occupation, type of DM, duration of diabetes in years, medication and non-medication treatments, comorbidities, adherence to medication, smoking and alcohol consumption habits, and regular physical exercise (more than three times a week).

The vaccination status dimension (three items) assesses whether the individual has a vaccination card and produced it, the immunization status for hepatitis B, influenza, dT, MMR, yellow fever, COVID-19, varicella and conjugate pneumococcal vaccines, and where the vaccines were administered (FHUs, secondary care, home or CRIE).

The last dimension concerns the perception of individuals with DM regarding vaccination (11 items), which included: knowledge about the PNI; whether they consider the media campaigns conducted by the PNI sufficient to motivate vaccination; reasons for having an incomplete vaccination status (fear of experiencing adverse reactions, lack of awareness about the importance of vaccination, previous experiences of reactions to certain vaccines, not deeming it necessary, lack of information from healthcare providers, and other reasons - please specify). Participants could provide more than one answer. Additionally, the survey asked about guidance from healthcare providers regarding the importance of keeping up to date with the vaccination schedule; adherence to vaccination guidance provided by healthcare providers; visits to the FHUs to complete the vaccination schedule s requiring two or more doses; adverse effects following vaccination; health problems that prevented them from getting vaccinated; medical or nursing advice against receiving further vaccines after such health problems; difficulties in getting vaccinated (FHUs being too far away, lack of time, inconvenient operating hours of the vaccination site, being told to return another day, not considering it necessary, no supplies available on the day and not being part of the priority group on the day); and whether they ever attempted to get vaccinated but were unsuccessful.

Regarding the variables, the dependent variable was having a complete vaccination status for each vaccine while the independent variables included gender, age (in years), education level, marital status and duration of diabetes (in years). Individuals were considered vaccinated against influenza if there was a record of one dose of the vaccine within the year prior to data collection; against hepatitis B, a record of three doses; for the MMR vaccine, two doses (for ages 20 to 29) and one dose (for ages 30 to 59); for yellow fever, a record of a single dose; for dT, three doses received within 10 years prior to data collection; for pneumococcus (PCV13) and varicella, two doses; and for COVID-19, two doses plus one booster.

Data processing and analysis

The data were tabulated and organized in a Microsoft Excel® 2016 spreadsheet and analyzed by using the Statistical Package for the Social Sciences (SPSS) version 26. For exploratory, descriptive analyses, absolute and relative frequencies were applied for qualitative variables, and measures of central tendency and dispersion for quantitative variables. The confidence interval was applied to the relative frequency and mean of the analyzed variables. To verify the factors associated with vaccination status, bivariate analysis was conducted using Fisher’s exact test (X²). For variables that showed significance at the 5% level, bivariate logistic regression was applied to calculate the odds ratio (OR). A significance level of 5% (0.05) was adopted, considering p-values < 0.05 as statistically significant for association.

Ethical aspects

The research was approved by the Research Ethics Committee of the proposing institution under number 5,036,594, on October 14, 2021, and was conducted in accordance with Resolution 466/12 of the National Health Council.

Results

Of the 274 individuals with DM who made up the sample, the majority were aged 60 or older (169; 62.6%), were women (192; 70.1%), had an income lower than or equal to one minimum wage (150; 63.6%) and had complete elementary education (139; 51.5%). Regarding clinical characteristics, the most reported type of DM was type 2 (260; 95.2%), with over 10 years of duration of the chronic condition (109; 41.3%), and treated with oral antidiabetic medication (231; 85.9%), as presented in Table 1.

Table 2 shows that the majority had a vaccination card (262; 95.6%), with no doses for hepatitis B (188; 69.1%); and the schedule for the influenza vaccine, 204 (75%) had received the single dose; most were not vaccinated against diphtheria and tetanus (175; 64.6%); yellow fever (202; 74.3%); MMP (223; 82.3%); pneumococcus (240; 87.9%); and varicella (239; 87.9%). Most had a complete vaccination schedule for COVID-19 (271; 68.5%). Regarding place of vaccination, the FHUs were the most frequently mentioned facilities (168; 62%).

Table 1 -
Sociodemographic and clinical profile of individuals with diabetes mellitus registered with the FHTs* (n = 274). Picos, PI, Brazil, 2022
Table 2 -
Vaccination status of individuals with diabetes mellitus registered with the FHTs* (n = 274). Picos, PI, Brazil, 2022

Most of the respondents (165; 60.2%) reported never having heard of the PNI. In addition, nearly half (129; 48.3%) felt that the program’s media campaigns are not sufficient to motivate the public to get vaccinated. The main reasons mentioned for having an incomplete vaccination schedule were not knowing the importance of vaccination (68; 25.9%) and not being informed by the healthcare provider (98; 37.3%), as shown in Table 3.

Table 3 -
Perception about vaccination of individuals with diabetes mellitus registered with the FHTs* (n = 274). Picos, PI, Brazil, 2022

In this survey, the main difficulties reported by individuals with DM to get vaccinated include transportation problems (35; 52.2%) and shortage of supplies/vaccines (22; 32.8%), as shown in the Figure 1.

Figure 1 -
Main difficulties to get vaccinated faced by individuals with diabetes mellitus treated by the FHTs (n = 65). Picos, PI, Brazil, 2022

In Table 4, the odds ratios were analyzed among the variables that showed statistical significance (p<0.005) in the bivariate analysis. It was observed that vaccination against influenza was associated with age (OR = 0.395; CI 206–0.755); with being Catholic (OR = 6.275; CI 1.201–32.781) and evangelical (OR = 5.295; CI 0.878–31.950); with family income (OR = 0.321; CI 0.144–0.718); and with alcohol consumption (OR = 0.394; CI 0.148–1.050).

In the case of the MMR vaccine, type of DM did not influence the likelihood of a person with diabetes getting vaccinated (OR = 8.491), while those using oral antidiabetic medication have lower chances of being vaccinated compared to those using both treatments (insulin and oral antidiabetics) (OR = 0.313; CI 0.028–3.515). Regarding yellow fever vaccination, individuals with DM1 are more likely to get vaccinated compared to those with DM2 (OR = 4.286; CI 1.292–14.218).

Considering COVID-19 vaccination, younger individuals (aged 20 to 59) are less likely to be vaccinated compared to older individuals (60 years or older) (OR = 0.342; CI 0.153–0.761). People with DM1 are more likely to be vaccinated compared to those with DM2 (OR = 0.142; CI 0.029–0.753), and regarding the duration of diabetes, individuals with fewer years of the condition have lower chances of completing the vaccination schedule (OR = 0.132; CI 0.039–0.445) compared to those who have lived with the condition for a longer time (OR = 0.276; CI 0.078–0.968).

Table 4 -
Logistic regression analysis of the association between vaccination against influenza, dT*, MMR, yellow fever and COVID-19 and the sociodemographic and clinical profile of individuals with diabetes mellitus registered with the FHTs (n = 274). Picos, PI, Brazil, 2022

Discussion

The results of this study indicate low vaccination rates regarding the list of recommended vaccines for individuals with DM. Most had taken no hepatitis B vaccine and only 21.3% presented a complete vaccination schedule (three doses), which is consistent with other studies assessing vaccination in individuals with DM(10,12-14). This situation is concerning, as these individuals have high rates of hepatitis B(4) and outbreaks of this disease have been associated with blood glucose monitoring procedures among people with DM(16).

Regarding influenza vaccination, most participants had taken the single dose, which is administered annually. This finding may be related to the annual campaigns, media messages and the inclusion of DM in the group of chronic diseases prioritized for vaccination since 2013. Nevertheless, the goal of 90% vaccination coverage in Brazil was not achieved in 2022(17).

In this study, it was identified that younger adults (aged 20 to 59) had a lower likelihood of vaccination compared to older individuals, which corroborates findings from other studies(11-12,14) that reported a higher frequency of influenza vaccination in individuals over 65 and 60 years old, respectively. This is an essential prevention strategy for this age group, as the most frequent occurrences of SARS due to influenza in Brazil in 2021 were among individuals aged 60 and older, accounting for 52.1% (2,252) of the cases.

A retrospective cohort study in the United States found that individuals with influenza infection had significantly increased rates of pneumonia, ischemic heart disease and sepsis during the influenza period compared to baseline periods. For individuals with DM2, these results suggest that influenza increases the risk of more severe clinical outcomes and healthcare use compared to the general population(18).

Most individuals with DM who took part in this survey also had low rates for the pneumococcal vaccine, similar to the finding of a study that evaluated this vaccine in individuals with DM receiving care in a referral healthcare facility in the Federal District. The study also examined the level of knowledge among healthcare professionals on the subject and the impact of guidance on vaccination adherence. It was found that only 12.1% of individuals with DM and pneumonia reported having received the pneumococcal vaccine, while 69.7% denied receiving it and 18.2% were unaware of its existence(19).

Regarding the causes and weaknesses affecting pneumococcal vaccination coverage, it is observed that there is misinformation among prescribing professionals in APS about the recommendations of the Brazilian Ministry of Health (MS). In this context, some strategies are necessary such as improving the training of APS professionals on MS recommendations for adult vaccination, streamlining the request and dispensing of vaccines, simplifying information processes, encouraging multidisciplinary care and raising awareness among both professionals and patients about the importance of vaccination(20).

It is important to note that this vaccine is available in the CRIEs upon medical prescription. Thus, two initiatives could enhance access and adherence to pneumococcal vaccination for individuals with DM: first, informing prescribing professionals about the importance of requesting this vaccine for individuals with DM from the CRIEs; and second, expanding the list of professionals who can request/prescribe the vaccine for individuals with DM.

A randomized clinical trial evaluated the vaccination rates of individuals with DM who received guidance on updating their vaccination schedules for influenza, hepatitis B, pneumonia and tetanus. No significant increase was observed, showing that these individuals did not receive adequate guidance from the professionals caring for them. It is crucial to offer training to healthcare professionals, raising their awareness about the importance of providing individuals with DM with guidance on vaccination during routine consultations(21).

Concerning vaccination against COVID-19, the majority were up to date with their vaccination schedule. Young individuals who have lived with DM for less time and those with DM1 had a lower chance of being vaccinated compared to older adults who have lived with the condition for a longer time and those with DM2. Older adults have more health information, as they frequent health services more often than younger individuals. In addition, the COVID-19 vaccination campaigns stressed the importance of specific protection for high-risk groups due to the poor prognosis of the infection in older adults.

Individuals with DM are at greater risk for severe COVID-19 compared to those without DM. In such individuals, the chances of hospitalization due to COVID-19 and the greater severity of the disease are three to four times higher compared to those without DM(22). Thus, primary prevention through timely vaccination remains essential to mitigate the risks associated with COVID-19 in people with DM.

The vaccination rate against diphtheria and tetanus was very low. It is known that individuals with DM2 are prone to tetanus infection, especially when diagnosed with “diabetic foot” lesions, because the reduced capillary circulation in the lower extremities leads to polymicrobial infections complicated by anaerobic bacteria(8).

Regarding the varicella vaccine, despite being highly recommended by the SBD and the SBIm(6), coverage rates were also negligible. For individuals with DM, this vaccine is available only at the CRIEs; therefore, it is necessary to raise awareness among prescribing professionals about its importance for this population. About 98% of Brazilian adults have a history of varicella by the age of 60, which may lead to the development of herpes zoster(6). Consequently, these individuals have a substantially increased risk of developing herpes zoster, along with its complications such as pain from the acute phase and post-herpetic neuralgia(24).

Regarding the perception of individuals with DM about vaccination, most had never heard of the PNI, which is recognized as one of the largest public programs for access to vaccination worldwide. In Brazil, it is publicized as an important health strategy; however, it could be more widely communicated among the Brazilian adult and older adult population, especially by professionals working in APS.

In this survey, one of the most significant reasons for having an incomplete immunization schedule was not being informed by healthcare providers about the importance of getting vaccinated. It is known that professional recommendation is a fundamental strategy in the decision to accept vaccination(21,25). Health professionals should give clear and accessible information regarding how vaccination services operate, including their respective vaccination schedules and campaigns(9).

The healthcare providers who most informed individuals with DM about the importance of vaccination were the ACS and nurses. It is noteworthy that these professionals have more frequent contact with people with DM and should take the opportunity to instruct them about the benefits of maintaining their vaccination schedules up to date.

Effective communication is crucial not only to convey information about the importance of vaccination as a preventive measure but also to boost people’s confidence in vaccines. In addition, the credibility of the PNI among the population should be reinforced(26) to highlight the benefits of vaccination and dispel doubts that influence the decision to get vaccinated.

The reasons mentioned for incomplete immunization schedules include lack of understanding of the importance of vaccination and poor information provided by professionals. It is known that such agents facilitate vaccination adherence by encouraging individuals and reassuring them about safety and adverse effects(9). Research(26) has indicated that fear of adverse events compromises access to vaccination, in addition to other socioeconomic and geographic factors. Understanding these factors is crucial for planning vaccination strategies adapted to existing disparities and the need for more equitable policies in this context.

Therefore, it is essential to intensify campaigns, provide clarification and facilitate vaccination practices among patients, especially young adults, who are more reluctant to seek healthcare services. In this sense, nurses play an important role as health educators, providing communication channels to spread information about vaccination and boost adherence to it(27).

For all vaccines, most of individuals with DM were vaccinated in healthcare facilities of the Unified Health System (SUS), especially the FHUs. This consolidates the PNI’s condition as a vital public health program for universal access, ensuring that essential vaccines are available to the entire population, regardless of socioeconomic or geographic condition. This is also linked to increasing population coverage through APS.

Among the obstacles to vaccination, the most frequently reported were difficulties getting to vaccination sites due to physical limitations or lack of transport, as well as shortages of supplies or vaccines at the time of immunization. Notably, this population is predominantly composed of older adults, many of whom face some degree of physical limitation due to aging and have low incomes, which hinders access to healthcare services.

In light of this, healthcare facilities, especially in APS, should implement strategies to reach individuals with access difficulties and coordinate home care services to ensure the provision of vaccination. An additional element identified as hindering access to vaccination was lack of supplies/vaccines; therefore, it is essential to plan for the required number of doses. Aspects related to the organization and planning of vaccination campaigns may influence patient adherence.

The limitations of this study pertain to the local context in which the survey was conducted, making it difficult to generalize the results to other regions. Therefore, further research is recommended to understand other settings, as well as the barriers related to vaccination practices in the population with DM.

Regarding advancements in scientific knowledge, this is the first nationwide study to analyze the immunization status of people with DM for the vaccines recommended by the PNI(5-6), including those against COVID-19. In addition, it surveyed their perceptions regarding vaccination and the difficulties faced in primary healthcare.

Therefore, this study raised reflections on the importance of vaccination among these individuals, considering the encouragement of healthcare professionals, especially nurses, to provide guidance on the relevance of vaccination and to create opportune moments for vaccination, such as during visits for procedures like capillary blood glucose testing. Furthermore, the study is expected to help address the causes of low vaccination rates, such as poor professional guidance. This includes adopting and strengthening practices like filling out vaccination cards for individuals with DM and using the eSUS-APS system to record administered doses.

Conclusion

It was found that individuals with DM 1 and 2 treated in primary healthcare have low vaccination rates regarding the vaccines recommended by the PNI for this population group. This is concerning, as these individuals are more vulnerable to vaccine-preventable infections and mortality, which can significantly worsen their quality of life if they develop a preventable disease.

Efforts should be made to understand the barriers to vaccination and enhance the vaccination status of individuals with DM through ongoing training of healthcare providers and increased public awareness. The role of the nursing team is crucial in implementing vaccination initiatives across the country, as their involvement can significantly improve the vaccination rates among individuals with diabetes mellitus.

References

  • International Diabetes Federation. Atlas de la diabetes de la FID [Internet]. 10th ed. Brussels: International Diabetes Federation; 2021 [cited 2023 Jul 10]. Available from: https://diabetesatlas.org/atlas/tenth-edition/
    » https://diabetesatlas.org/atlas/tenth-edition/
  • Berbudi A, Rahmadika N, Tjahjadi AI, Ruslami R. Type 2 Diabetes and its Impact on the Immune System. Curr Diabetes Rev. 2020;16(5):442-9. https://doi.org/10.2174/1573399816666200701151511
    » https://doi.org/10.2174/1573399816666200701151511
  • Nobs SP, Kolodziejczyk AA, Adler L, Horesh N, Botscharnikow C, Herzog E, et al. Lung dendritic-cell metabolism underlies susceptibility to viral infection in diabetes. Nature. 2023;624(7992):645-52. https://doi.org/10.1038/s41586-023-05731-2
    » https://doi.org/10.1038/s41586-023-05731-2
  • American Diabetes Association Professional Practice Committee. 4. Comprehensive Medical Evaluation and Assessment of Comorbidities: Standards of Medical Care in Diabetes-2022. Diabetes Care. 2022;45(Suppl 1). https://doi.org/10.2337/dc22-S004
    » https://doi.org/10.2337/dc22-S004
  • Sociedade Brasileira de Imunização. Relatório do Encontro de Imunização em Pacientes Especiais [Internet]. São Paulo: SBIm; 2019 [cited 2023 Jul 10]. Available from: https://sbim.org.br/publicacoes/relatorios/1616-i-encontro-de-imunizacao-em-pacientes-especiais-2019
    » https://sbim.org.br/publicacoes/relatorios/1616-i-encontro-de-imunizacao-em-pacientes-especiais-2019
  • Sociedade Brasileira de Diabetes; Sociedade Brasileira de Imunizações. Guia de imunização SBIm/SBD – diabetes [Internet]. São Paulo: Sociedade Brasileira de Diabetes; [s.d.] [cited 2023 Jul 10]. Available from: https://sbim.org.br/publicacoes/guias/1119-guia-de-imunizacao-sbim-sbd-diabetes-2019-2020
    » https://sbim.org.br/publicacoes/guias/1119-guia-de-imunizacao-sbim-sbd-diabetes-2019-2020
  • Ministério da Saúde (BR), Secretaria de Vigilância em Saúde, Departamento de Vigilância das Doenças Transmissíveis. Manual de Normas e Procedimentos para Vacinação [Internet]. Brasília: MS; 2014 [cited 2024 Apr 28]. Available from: https://bvsms.saude.gov.br/bvs/publicacoes/manual_procedimentos_vacinacao.pdf
    » https://bvsms.saude.gov.br/bvs/publicacoes/manual_procedimentos_vacinacao.pdf
  • Vardavas C, Nikitara K, Aslanoglou K, Lagou L, Marou V, Phalkey R, et al. Social determinants of health and vaccine uptake during the first wave of the COVID-19 pandemic: A systematic review. Prev Med Rep. 2023;35:102319. https://doi.org/10.1016/j.pmedr.2023.102319
    » https://doi.org/10.1016/j.pmedr.2023.102319
  • Lanza TE, Lombardi GS, Tumelero S, Paladini A, Castagna C, Cadeddu C. Barriers and strength factors of adult immunization plans in seven countries of the European region. J Public Health. 2023. https://doi.org/10.1007/s10389-023-01986-2
    » https://doi.org/10.1007/s10389-023-01986-2
  • Arrelias CCA, Bellissimo-Rodrigues F, Lima LCL, Silva AS, Lima NK, Zanetti ML. Hepatitis B vaccination coverage in patients with diabetes mellitus. Rev Esc Enferm USP. 2016;50(2):255-62. https://doi.org/10.1590/S0080-623420160000200011
    » https://doi.org/10.1590/S0080-623420160000200011
  • Monteiro CN, Gianini RJ, Stopa SR, Segri NJ, Barros MB, Cesar CL, et al. Vaccination coverage and use of the Brazilian Health System for vaccination against influenza and pneumonia in adults and elderly with self-reported diabetes, municipality of São Paulo, 2003, 2008 and 2015. Epidemiol Serv Saúde. 2018;27(2). https://doi.org/10.5123/S1679-49742018000200006
    » https://doi.org/10.5123/S1679-49742018000200006
  • Galanos G, Dimitriou H, Pappas A, Perdikogianni C, Symvoulakis EK, Galanakis E, et al. Vaccination coverage of patients with type 2 diabetes mellitus: Challenging issues from an outpatient secondary care setting in Greece. Front Public Health. 2022;10:92121243. https://doi.org/10.3389/fpubh.2022.921243
    » https://doi.org/10.3389/fpubh.2022.921243
  • Zuercher E, Casillas A, Hagon-Traub I, Bordet J, Burnand B, Peytremann-Bridevaux I. Baseline data of a population-based cohort of patients with diabetes in Switzerland (CoDiab-VD). Swiss Med Wkly. 2014;144:2122. https://doi.org/10.4414/smw.2014.13951
    » https://doi.org/10.4414/smw.2014.13951
  • Alvarez CE, Clichici L, Guzmán-Libreros AP, Navarro-Francés M, Ena J. Survey of vaccination practices in patients with diabetes: A report examining patient and provider perceptions and barriers. J Clin Transl Endocrinol. 2017;23(9):15-7. https://doi.org/10.1016/j.jcte.2017.06.001
    » https://doi.org/10.1016/j.jcte.2017.06.001
  • Cuschieri S. The STROBE guidelines. Saudi J Anaesth. 2019;13(1):31-4. https://doi.org/10.4103/sja.sja_543_18
    » https://doi.org/10.4103/sja.sja_543_18
  • Centers for Disease Control and Prevention. People with Diabetes and Hepatitis B [Internet]. 2020 [cited 2022 Nov 25]. Available from: https://archive.cdc.gov/#/details?url=https://www.cdc.gov/hepatitis/populations/diabetes.htm
    » https://archive.cdc.gov/#/details?url=https://www.cdc.gov/hepatitis/populations/diabetes.htm
  • Ministério da Saúde (BR), Secretaria de Vigilância em Saúde, Departamento de Imunização e Vigilância de Doenças Transmissíveis. Informe técnico: 24ª Campanha Nacional de Vacinação contra a Influenza [Internet]. Brasília: MS; 2022 [cited 2022 Dec 10]. Available from: https://www.gov.br/saude/pt-br/assuntos/saude-de-a-a-z/c/calendario-nacional-de-vacinacao/arquivos/informe-da-24a-campanha-nacional-de-vacinacao-contra-a-influenza.pdf
    » https://www.gov.br/saude/pt-br/assuntos/saude-de-a-a-z/c/calendario-nacional-de-vacinacao/arquivos/informe-da-24a-campanha-nacional-de-vacinacao-contra-a-influenza.pdf
  • Samson SI, Konty K, Lee WN, Quisel T, Foschini L, Kerr D, et al. Quantifying the Impact of Influenza Among Persons With Type 2 Diabetes Mellitus: A New Approach to Determine Medical and Physical Activity Impact. J Diabetes Sci Technol. 2021;15(1):44-52. https://doi.org/10.1177/1932296819883340
    » https://doi.org/10.1177/1932296819883340
  • Tavares FS, Gomes LO, Fernandes RP, Romani FA, Melo GF, Dantas LB, et al. Pneumococcal vaccine situation in patients with diabetes attended at reference hospital in Federal District, Brazil. Electron J Collect Health. 2019;11(13). https://doi.org/10.25248/reas.e1282.2019
    » https://doi.org/10.25248/reas.e1282.2019
  • Santos SF. Causas para baixa cobertura vacinal pneumocócica em diabéticos na rede pública e propostas para combater ineficiências [Thesis]. Porto Alegre: Universidade Federal do Rio Grande do Sul; 2019 [cited 2023 Sept 22]. Available from: https://lume.ufrgs.br/bitstream/handle/10183/199251/001100810.pdf?sequence=1&isAllowed=y
    » https://lume.ufrgs.br/bitstream/handle/10183/199251/001100810.pdf?sequence=1&isAllowed=y
  • Guerra GL, Pedro FL, Severo MD, Guerra GL, Ribeiro TA. Strategy to increase vaccination coverage in diabetic patients at a public tertiary university hospital: A randomized controlled trial. SAGE Open Med. 2023;11:20503121231161193. https://doi.org/10.1177/20503121231161193
    » https://doi.org/10.1177/20503121231161193
  • Gregory JM, Slaughter JC, Duffus SH, Smith TJ, LeStourgeon LM, Jaser SS, et al. COVID-19 severity is tripled in the diabetes community: A prospective analysis of the pandemic’s impact in type 1 and type 2 diabetes. Diabetes Care. 2021;44(2):526-32. https://doi.org/10.2337/dc20-2260
    » https://doi.org/10.2337/dc20-2260
  • Pal R, Bhadada SK, Misra A. COVID-19 vaccination in patients with diabetes mellitus: Current concepts, uncertainties and challenges. Diabetes Metab Syndr. 2021;15(2):505-8. https://doi.org/10.1016/j.dsx.2021.02.026
    » https://doi.org/10.1016/j.dsx.2021.02.026
  • Lai SW, Liu CS, Kuo YH, Lin CL, Hwang BF, Liao KF. The incidence of herpes zoster in patients with diabetes mellitus: A meta-analysis of cohort studies. Medicine (Baltimore). 2021;100(16). https://doi.org/10.1097/MD.0000000000025292
    » https://doi.org/10.1097/MD.0000000000025292
  • Domingues CM, Maranhão AG, Teixeira AM, Fantinato FF, Domingues RA. The Brazilian National Immunization Program: 46 years of achievements and challenges. Cad Saúde Pública. 2020;36. https://doi.org/10.1590/0102-311X00222919
    » https://doi.org/10.1590/0102-311X00222919
  • Duarte DC, Oliveira VC, Guimarães EAA, Viegas SMF. Vaccination access in Primary Care from the user’s perspective: senses and feelings about healthcare services. Esc Anna Nery. 2019;23(1):e20180250. https://doi.org/10.1590/2177-9465-EAN-2018-0250
    » https://doi.org/10.1590/2177-9465-EAN-2018-0250
  • Silva IAG, Sá ACMGN, Prates EJS, Malta DC, Matozinhos FP, Silva TMR. Vaccination against human papillomavirus in Brazilian schoolchildren: National Survey of School Health, 2019. Rev. Latino-Am. Enfermagem. 2022;30(spe):e3834. https://doi.org/10.1590/1518-8345.6296.3834
    » https://doi.org/10.1590/1518-8345.6296.3834
  • How to cite this article
    Carvalho FJ Neto, Lima LHO, Gamba MA, Brito RL, Silva LMS, Silva ARV. Vaccination status of individuals with diabetes mellitus treated in Primary Healthcare: a cross-sectional study. Rev. Latino-Am. Enfermagem. 2025;33:e4452 [cited yearmonth day]. Available from: URL . https://doi.org/10.1590/1518-8345.7065.4452

Edited by

  • Associate Editor:
    Aline Aparecida Monroe

Publication Dates

  • Publication in this collection
    03 Feb 2025
  • Date of issue
    2025

History

  • Received
    22 Sept 2023
  • Accepted
    19 Aug 2024
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