Hundreds quarantined as measles outbreak accelerates in the South

2 days ago

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Over 200 people quarantined in South Carolina due to a measles outbreak.
111 cases reported in the Upstate region, linked to a local church.
105 of the infected were unvaccinated, 3 partially vaccinated.
27 new cases reported since Friday, totaling 123 cases in 2025.
254 potentially exposed individuals quarantined, 16 in isolation.
MMR vaccine is 97% effective with two doses, 93% with one.
Herd immunity requires 95% vaccination rate; US at 92.5% for kindergarteners.
South Carolina's kindergarten vaccination rate is 91%, with exemptions for 5%.
Measles is highly infectious; unvaccinated have a 90% chance of infection.
Three in 1,000 measles cases result in death.
1,912 US cases and 3 deaths reported this year, the largest outbreak since 1992.
92% of US cases are unvaccinated or have unknown vaccination status.
11% of cases hospitalized, mostly children under 5.
Measles symptoms include rash, pneumonia, seizures, brain damage, and death.
Virus spreads via direct contact or airborne droplets; contagious before and after rash appears.
Before the MMR vaccine, measles caused up to 500 US deaths annually.

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