Researchers have been unable to find the original source in a Welsh Shigella outbreak that affected more than 50 people.
In February 2023, 52 cases of gastrointestinal illness were reported
The second-largest foodborne outbreak of Shigella flexneri in more than 30 years struck guests at an Oregon wedding last August.
Shigella flexneri is a Gram-negative, enteric pathogen and together with
