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Event Brief

WRSs2 vaccine shows 89% effectiveness against shigellosis

Trials of the WRSs2 vaccine reported 89% effectiveness against shigellosis, a major cause of diarrheal deaths.
WHO: WRSs2 vaccine trial teams at Cincinnati Children's Hospital Medical Center and Emory Vaccine Center's Hope Clinic
WHAT: Results published in The Lancet Infectious Diseases reported 89% effectiveness of the WRSs2 vaccine against shigellosis.
WHEN: Reported Aug 7, 2026 at 7:36 AM ET
WHERE: Location not specified
WHY: The vaccine trial results showed high effectiveness at preventing shigellosis.

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