Whooping cough cases in the US are surging, reaching 8,485 in 2025—double last year's number. This rise is linked to decreased vaccination rates, particularly among pregnant women and kindergarteners, resulting in reduced herd immunity. Experts express concern over growing anti-vaccine sentiment. Infants are most vulnerable, with recent deaths reported. The illness, spread through respiratory droplets, is treated with antibiotics. States like Pennsylvania and Michigan are also experiencing significant increases, with outbreaks concentrated in populated areas and schools.

Prepared by Olivia Bennett and reviewed by editorial team.