Factors associated with Group A Streptococcus emm type diversification in a large urban setting in Brazil: a cross-sectional study

摘要

BackgroundGroup A Streptococcus (GAS) strain diversity varies across different regions of the world, according to low versus high-income countries. These differences may be related to geographic, environmental, socioeconomic, or host-related factors. However, local factors may also affect strain diversity. We compared the emm types of GAS isolates from children with and without sore throat in one large urban setting in Brazil.