Chochua S, Metcalf B, Li Z, Mathis S, et al. Invasive Group A Streptococcal Penicillin Binding Protein 2x Variants Associated
with Reduced Susceptibility to beta-Lactam Antibiotics in the United States,
2015-2021. Antimicrob Agents Chemother 2022 Aug 15:e0080222. doi: 10.1128/aac.00802.
PMID: 35969070