Streptococcus agalactiae (group B Streptococcus) sequence type 283 bacteremia, found almost exclusively in Southeast Asia, is associated with consuming raw freshwater fish, but some patients deny consumption. We detected fecal carriage in 5/184 (2.7%) persons in northeast Thailand. Human carriers might contribute to transmission or be the original source of this sequence type.
Keywords: Group B Streptococcus; Streptococcus agalactiae; Thailand; bacteria; carrier; fish; food safety; foodborne; human; multilocus sequence typing; reservoir; source; streptococci.