How long does it take to declare a measles outbreak over?
A measles outbreak can be declared over after 42 consecutive days with no new cases.
Health / Disease Outbreak
The South Carolina Department of Public Health (DPH) has announced a halt in new measles cases related to the recent Upstate outbreak. As of March 24, 2026, the total number of cases remains at 997. This article provides an update on the si...
The measles outbreak in Upstate South Carolina has been a significant public health concern. The DPH is closely monitoring the situation. The majority of cases have been among school-aged children (639 cases in ages 5-17), followed by children under 5 (264 cases), adults (87 cases), and eight cases of unknown age. The DPH continues to urge residents to get vaccinated. Vaccines are available through primary care providers, pharmacies, and local health departments. If no new cases are reported, the outbreak could be declared over by April 26.
**How to Prepare**
**Who This Affects Most**
A measles outbreak can be declared over after 42 consecutive days with no new cases.
Vaccines are available through primary care providers, pharmacies, and local health departments.
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