By Vijay Kumar Malesu Reviewed by Susha Cheriyedath, M.Sc. Apr 20 2026 Pertussis cases dropped during the pandemic, then surged back across several countries, but Japan’s delayed 2025 outbreak stood out for its scale and its heavy impact on older children and teens. The findings raise new questions about waning immunity, booster policy, and how best to protect infants in the post-pandemic era. Study: Pertussis resurgence after the COVID-19 pandemic in four Western Pacific Countries and the USA,

Tag-uri: Coronavirus