During September-October 2021, group B Streptococcus bloodstream infections surged among patients hospitalized in Hong Kong. Of 95 cases, 57 were caused by the hypervirulent strain sequence type 283, which at the time was also found in freshwater fish and wet market environments and thus poses a transmission threat.
Keywords: China; GBS; Hong Kong; ST283; Streptococcus agalactiae; bacteremia; group B Streptococcus; meningitis; molecular epidemiology; pyogenic arthritis; sepsis; streptococcal infections; streptococci.