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Research Letter
Sexually transmitted Shigella flexneri and Shigella sonnei in men who have sex with men
  1. Daniel Richardson1,2,
  2. John Devlin1,
  3. Colin Fitzpatrick1,
  4. Nicolas Pinto-Sander1
  1. 1Sexual Health & HIV, Brighton and Sussex University Hospitals NHS Trust, Brighton, Brighton and Hove, UK
  2. 2Sexual Health & HIV Medicine, Brighton and Sussex Medical School, Brighton, Brighton and Hove, UK
  1. Correspondence to Dr Daniel Richardson, Sexual Health & HIV, Brighton and Sussex University Hospitals NHS Trust, Brighton BN2 5BE, Brighton and Hove, UK; docdanielr{at}

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Sexually transmitted enteric infections in men who have sex with men (MSM) can be caused by viruses (eg, hepatitis A), bacteria (eg, Shigella) and protozoa (eg, Giardia) and can cause hepatitis, proctocolitis and enteritis.1 Enteric infections in MSM occur in sporadic outbreaks related to sexual networks involving transmission of other STIs, geosocial app use for meeting sexual partners and chemsex (high-risk sexual behaviour and recreational drug use, including injecting drug use).1 2 Shigella is a Gram-negative bacteria closely related to Escherichia coli causing a self-limiting diarrhoea illness caused by four subtypes (S. dysenteriae, S. flexneri, S. boydii and S. sonnei). Sexually transmitted S. flexneri in MSM has been shown to be associated with significant morbidity.3 S. flexneri and …

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