Serotype IV Group B Streptococcus isolated from invasive infections in Japan
We conducted whole-genome analyses of 14 serotype IV GBS isolates obtained from pediatric sterile clinical specimens registered in our prospective surveillance study between May 2023 and May 2024, as well as seven serotype IV GBS isolates obtained from adult sterile clinical specimens that had been preserved at three hospitals between 2018 and 2022.