Changes in Group A Streptococcus emm Types Associated with Invasive Infections in Adults, Spain, 2023

Abstract

An increase in invasive group A Streptococcus infection was detected in the northeast of Spain in November 2022. A postpandemic decline in the diversity of circulating emm types involved in invasive group A Streptococcus was observed, along with the emergence of emm49 in this geographic area.

Keywords

• Streptococcus pyogenes
• bacteria
• streptococci
• emm typing
• invasive infection
• group A Streptococcus