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Revista da Associação Médica Brasileira

versão impressa ISSN 0104-4230versão On-line ISSN 1806-9282

Resumo

FIGUEIREDO, Cristina A. et al. Seroprevalence of rubella in urban and rural populations, Guaratinguetá. Rev. Assoc. Med. Bras. [online]. 2009, vol.55, n.2, pp.117-120. ISSN 0104-4230.  http://dx.doi.org/10.1590/S0104-42302009000200011.

OBJECTIVE: To investigate seroprevalence of rubella antibodies in a 15 to 39 year old population in the municipal district of Guaratinguetá. METHODS: The 996 samples studied were collected in urban and rural zones, after informed and elucidated consent from men and women stratified by age (15 -39 years). Rubella IgG antibodies were detected by ELISA using the commercial kit Rubenostika IgGII (Organon Teknika THE, Holland). Age groups were stratified in 3 categories: 15-19; 20-29 and 30-39 years of age. Statistical analyses were accomplished with the software MINITAB version 14.0 (Minitab Inc, USA). RESULTS: The proportion of seropositives for antibodies of the IgG class were: 92.7.% positive for 15-19 years; 82.4% for 20 to 29 years and 90.7% for 30-39 years, with a significant difference in the seropositive proportions by age group (p <0.001). Variation of intensity of antibody response was calculated and results show a significant difference (p = 0.002) between means of the 3 age groups studied. In relation to rural and urban zone average of the ratio DO/CO for each age group, a significant tendency towards a lower average was observed in the rural zone. The same was true when the seropositive proportions were calculated. CONCLUSION: Results showed that the percentage and individuals with antibodies of the IgG class against rubella in the 20-29 year age group was lower than that in the younger and older age groups. Furthermore, the difference between seropositivity in the urban and rural zones discloses susceptibility with a potential for continued circulation of the virus in this zone.

Palavras-chave : Serology; Rubella virus; Seroprevalence.

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