Vaccination policy stories

Sep 19, 2026

Unvaccinated Amtrak passenger with measles travels across six California counties, prompting exposure alert

Public health officials issued warnings after an unvaccinated traveler infected with measles rode an Amtrak train from Chicago to Los Angeles, then traveled by trains and buses across at least six California counties before being hospitalized. Thousands of passengers may have been exposed to the highly contagious disease.

Sep 19, 20264 sources

May 26, 2011

Measles cases in US surpass 2,777 in 2019, driven by declining vaccination rates

The CDC reported 2,777 confirmed measles cases as of August 20, exceeding the previous year's total of 2,289 cases. About 94% of cases occurred among unvaccinated individuals, marking a significant resurgence of a disease that was declared eliminated in the United States in 2000.

May 26, 20111 source