The United States is experiencing a serious measles outbreak, with over 1,277 confirmed cases, marking the highest total since 1992. The resurgence is primarily due to declining vaccination rates and rising vaccine hesitancy. At least 155 hospitalizations and three deaths have been reported among unvaccinated individuals. Counties reported a drop in MMR vaccination rates from 93.9% to 91.3%, significantly below the 95% herd immunity threshold. Approximately 92% of measles cases involve unvaccinated individuals. Health officials are urging vaccinations, highlighting that the MMR vaccine is safe and highly effective.
As of early July, at least 1,277 measles cases had been confirmed across 38 states and the District of Columbia, marking the highest tally since 1992.
The CDC warns that the actual number of cases may be higher, as some infections go unreported, amidst the outbreak closely linked to declining vaccination rates.
According to the CDC, 92% of this year's measles cases involved individuals who were unvaccinated or whose vaccination status was unknown, emphasizing the need for vaccination.
In response to the outbreak, Texas alone administered over 173,000 doses of the measles vaccine in the first three months of 2025, a notable increase from previous levels.
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