Andrejko et al.1515 Andrejko KL, Pry JM, Myers JF, Fukui N, DeGuzman JL, Openshaw J, et al. Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection - California, February-December 2021. MMWR Morb Mortal Wkly Rep. 2022;71(6):212-216. https://doi.org/10.15585/mmwr.mm7106e1 https://doi.org/10.15585/mmwr.mm7106e1...
|
Case-control |
2,749 participants from the state of California, USA, were evaluated between February 18 and December 1, 2021. All participants reported having been in indoor public settings 14 days before SARS-CoV-2 testing |
Wearing masks (cotton, surgical, or N95/KN95. |
Not wearing masks |
COVID-19 infection |
14 days |
Chen et al.1313 Chen Y, Tong X, Wang J, Huang W, Yin S, Huang R, et al. High SARS-CoV-2 antibody prevalence among healthcare workers exposed to COVID-19 patients. J Infect. 2020;81(3):420-426. https://doi.org/10.1016/j.jinf.2020.05.067 https://doi.org/10.1016/j.jinf.2020.05.0...
|
Cohort |
Risk factors were evaluated in 105 healthcare workers having had contact with 4 individuals positive for COVID-19 in nursing homes in China |
Wearing masks (disposable nonsurgical face masks, surgical masks, or N95) |
Not wearing masks |
Demographic characteristics, clinical symptoms, and COVID-19 infection |
14 days |
Doung-Ngern et al.1616 Doung-Ngern P, Suphanchaimat R, Panjangampatthana A, Janekrongtham C, Ruampoom D, Daochaeng N, et al. Case-Control Study of Use of Personal Protective Measures and Risk for SARS-CoV 2 Infection, Thailand. Emerg Infect Dis. 2020;26(11):2607-2616. https://doi.org/10.3201/eid2611.203003 https://doi.org/10.3201/eid2611.203003...
|
Case-control |
1,050 people who attended public companies, nightclubs, and boxing stadiums in Thailand between March 1st and May 30, 2020 were interviewed via telephone |
Wearing surgical masks |
Not wearing masks |
COVID-19 infection |
21 days |
Guo et al.1717 Guo X, Wang J, Hu D, Wu L, Gu L, Wang Y. Survey of COVID-19 Disease Among Orthopaedic Surgeons in Wuhan, People's Republic of China. J Bone Joint Surg Am. 2020;102(10):847-854. https://doi.org/10.2106/JBJS.20.00417 https://doi.org/10.2106/JBJS.20.00417...
|
Case-control |
72 orthopedic surgeons working at hospitals in Wuhan, China, between December 31, 2019 and February 24, 2020 |
Wearing N95 masks |
Not wearing masks |
COVID-19 infection |
N/A |
Heinzerling et al.1818 Heinzerling A, Stuckey MJ, Scheuer T, Xu K, Perkins KM, Resseger H, et al. Transmission of COVID-19 to Health Care Personnel During Exposures to a Hospitalized Patient - Solano County, California, February 2020. MMWR Morb Mortal Wkly Rep. 2020;69(15):472-476. https://doi.org/10.15585/mmwr.mm6915e5 https://doi.org/10.15585/mmwr.mm6915e5...
|
Case-control |
37 hospital workers, contacting the first case of SARS-CoV-2 in California, USA. |
Wearing surgical masks |
Not wearing mask |
COVID-19 infection |
N/A |
Khalil et al.1919 Khalil MM, Alam MM, Arefin MK, Chowdhury MR, Huq MR, Chowdhury JA, et al. Role of Personal Protective Measures in Prevention of COVID-19 Spread Among Physicians in Bangladesh: a Multicenter Cross-Sectional Comparative Study. SN Compr Clin Med. 2020;2(10):1733-1739. https://doi.org/10.1007/s42399-020-00471-1 https://doi.org/10.1007/s42399-020-00471...
|
Case-control |
190 physicians who worked in hospitals in Bangladesh between May and June of 2020 |
Wearing community masks and N95 masks |
Not wearing masks |
COVID-19 infection |
N/A |
Rebmann et al.2020 Rebmann T, Loux TM, Arnold LD, Charney R, Horton D, Gomel A. SARS-CoV-2 Transmission to Masked and Unmasked Close Contacts of University Students with COVID-19 - St. Louis, Missouri, January-May 2021. MMWR Morb Mortal Wkly Rep. 2021;70(36):1245-1248. https://doi.org/10.15585/mmwr.mm7036a3 https://doi.org/10.15585/mmwr.mm7036a3...
|
Case-control |
9,335 students from the University of St. Louis, USA. were tested by PCR, resulting in 265 positive cases for COVID-19, and 378 students who had close contacts with positive cases between January and May of 2021 (26 cases and 352 controls) |
Wearing surgical masks |
Not wearing masks |
COVID-19 infection |
N/A |
Wang et al.1414 Wang Y, Tian H, Zhang L, Zhang M, Guo D, Wu W, et al. Reduction of secondary transmission of SARS-CoV-2 in households by face mask use, disinfection and social distancing: a cohort study in Beijing, China. BMJ Glob Health. 2020;5(5):e002794. https://doi.org/10.1136/bmjgh-2020-002794 https://doi.org/10.1136/bmjgh-2020-00279...
|
Retrospective Cohort |
124 families with cases of COVID-19 infection in family members; hygiene behaviors, individual protection, and social distancing were evaluated |
Wearing community masks |
Not wearing masks |
COVID-19 infection |
14 days |
Wang et al.2121 Wang X, Pan Z, Cheng Z. Association between 2019-nCoV transmission and N95 respirator use. J Hosp Infect. 2020;105(1):104-105. https://doi.org/10.1016/j.jhin.2020.02.021 https://doi.org/10.1016/j.jhin.2020.02.0...
|
Case-control |
493 physicians and nurses working at the Zhongnan University Hospital, Wuhan, China, between January 2 and 22, 2020 |
Wearing N95 masks |
Not wearing N95 masks |
COVID-19 infection |
N/A |