Measles cases surge as childhood MMR vaccination rates drop in 78% of US counties.

A recent report by Johns Hopkins University shows that 78% of US counties have experienced a decline in childhood MMR vaccination rates over the past five years, with the average rate dropping from 93.92% to 91.26%. Only four states—California, Connecticut, Maine, and New York—saw an increase. With 1,088 measles cases confirmed across 32 states this year, the US is concerned about a resurgence of measles. The study highlights the risk of measles becoming endemic if vaccination rates continue to fall.