Nature communications · 2024
Rapid expansion and international spread of M1UK in the post-pandemic UK upsurge of Streptococcus pyogenes.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Vieira Ana, Wan Yu, Ryan Yan, Li Ho Kwong, Guy Rebecca L, Papangeli Maria, Huse Kristin K, Reeves Lucy C, Soo Valerie W C, Daniel Roger, Harley Alessandra, Broughton Karen, Dhami Chenchal, Ganner Mark, Ganner Marjorie A, Mumin Zaynab, Razaei Maryam, Rundberg Emma, Mammadov Rufat, Mills Ewurabena A, Sgro Vincenzo, Mok Kai Yi, Didelot Xavier, Croucher Nicholas J, Jauneikaite Elita, Lamagni Theresa, Brown Colin S, Coelho Juliana, Sriskandan Shiranee
Аннотация
The UK observed a marked increase in scarlet fever and invasive group A streptococcal infection in 2022 with severe outcomes in children and similar trends worldwide. Here we report lineage M1UK to be the dominant source of invasive infections in this upsurge. Compared with ancestral M1global strains, invasive M1UK strains exhibit reduced genomic diversity and fewer mutations in two-component regulator genes covRS. The emergence of M1UK is dated to 2008. Following a bottleneck coinciding with the COVID-19 pandemic, three emergent M1UK clades underwent rapid nationwide expansion, despite lack of detection in previous years. All M1UK isolates thus-far sequenced globally have a phylogenetic origin in the UK, with dispersal of the new clades in Europe. While waning immunity may promote streptococcal epidemics, the genetic features of M1UK point to a fitness advantage in pathogenicity, and a striking ability to persist through population bottlenecks.