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Volume 29, Number 5—May 2023
Dispatch

Emerging Invasive Group A Streptococcus M1UK Lineage Detected by Allele-Specific PCR, England, 20201

Xiangyun Zhi, Ho Kwong Li, Hanqi Li, Zuzanna Loboda, Samson Charles, Ana Vieira, Kristin Huse, Elita Jauneikaite, Lucy Reeves, Kai Yi Mok, Juliana Coelho, Theresa Lamagni, and Shiranee SriskandanComments to Author 
Author affiliations: Imperial College London, London, UK (X. Zhi, H.K. Li, H. Li, Z. Loboda, S. Charles, A. Vieira, K. Huse, E. Jauneikaite, L. Reeves, K.Y. Mok, S. Sriskandan); United Kingdom Health Security Agency, London (J. Coelho, T. Lamagni)

Main Article

Figure 2

Prevalence of M1UK and M1global Streptococcus pyogenes lineages over time in study of emerging invasive group A Streptococcus M1UK lineage detected by allele-specific PCR, England, 2020. We determined percentages of emm1 isolates in England that belonged to M1UK or M1global lineages by using all available emm1 S. pyogenes genome sequences for 2007–2016 (4) and all available invasive isolates from 2020 that we tested by allele-specific PCR. Numbers on graph indicate number of isolates assigned as M1UK/total number sequenced for each year. Graph was adapted and updated from data previously described (4).

Figure 2. Prevalence of M1UK and M1global Streptococcus pyogenes lineages over time in study of emerging invasive group A Streptococcus M1UK lineage detected by allele-specific PCR, England, 2020. We determined percentages of emm1 isolates in England that belonged to M1UK or M1global lineages by using all available emm1 S. pyogenes genome sequences for 2007–2016 (4) and all available invasive isolates from 2020 that we tested by allele-specific PCR. Numbers on graph indicate number of isolates assigned as M1UK/total number sequenced for each year. Graph was adapted and updated from data previously described (4).

Main Article

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Main Article

1Data from this study were presented at the 21st Lancefield International Symposium on Streptococci and Streptococcal Diseases; Stockholm, Sweden; June 7–10, 2022.

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Page updated: April 19, 2023
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