Event Brief
Nov 23, 2025 at 5:03 PM ET
Gut bacteria may explain vaccine effectiveness drop
By The BriefBrief
Researchers suggest gut bacteria may reduce vaccine efficacy when antibiotics are used.
WHO: Researchers
WHAT: Study on gut bacteria and vaccine effectiveness
WHEN: Nov 22, 2025 at 7:00 PM ET
WHERE: Not specified
WHY: To understand the impact of antibiotics on vaccines
How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.
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