OXFORD, PA — Oxford Area High School is reportedly closed to students and staff today, October 9, following a confirmed measles case within the school community, marking a direct disruption to school operations as Pennsylvania confronts its largest measles outbreak in more than three decades.
The closure comes as Pennsylvania’s reported measles total has reached 1,078 cases, according to state health data cited by CBS Philadelphia. Chester County has recorded 86 cases, up from 83 in a previous report, giving it the highest reported total among the five counties in the Philadelphia region.
Oxford Area School District Superintendent David Woods informed families Thursday that the high school would close to allow administrators to verify employees’ measles-immunity documentation under the direction of the Chester County Health Department.
The district also completed enhanced cleaning and disinfection of the building as a precautionary measure.
The closure represents the first reported Chester County school shutdown associated with the current outbreak, extending its consequences beyond public health surveillance to classroom operations, employee attendance and family schedules.
According to reporting by 6abc/WPVI, the Chester County Health Department will contact individuals believed to have been exposed to the virus.
Students and employees who cannot establish immunity may be required to remain away from school and school-sponsored activities for up to 21 days following potential exposure. Such exclusions could extend beyond Friday’s closure, depending on individual circumstances and public health determinations.
In a separate communication to district employees, Woods explained that individuals generally are considered protected against measles if they were born before 1957, previously had the disease, received recommended measles, mumps and rubella vaccinations, or have laboratory-confirmed evidence of immunity.
The district’s staff guidance states that exclusion decisions are made by the Chester County Health Department based on the circumstances of an exposure.
The outbreak has placed additional responsibilities on local school administrators, who must coordinate with public health officials to identify potential exposures and establish whether affected students and employees have adequate immunity documentation.
Earlier this week, Chester County Health Department Director Jeanne Franklin said county officials had been working with school nurses and superintendents before the academic year because of concerns about measles transmission, according to 6abc.
“We recognize that situations such as this can be unsettling, especially when they involve the health of children,” Woods wrote in correspondence quoted by CBS Philadelphia.
He added that the district would continue working with public health officials to protect students and employees while keeping families informed.
Measles is a highly contagious viral disease that spreads through the air when an infected person coughs or sneezes. The virus can remain infectious in the air for up to two hours after an infected person leaves an area, according to the Centers for Disease Control and Prevention.
Symptoms typically begin with fever, cough, runny nose and red, watery eyes. Small white spots may subsequently develop inside the mouth, followed by a rash that generally begins on the face and spreads downward.
The CDC recommends two doses of the measles, mumps and rubella vaccine, generally administered at ages 12 to 15 months and again at ages 4 to 6 years.
According to the agency, one dose is approximately 93% effective at preventing measles, while two doses provide approximately 97% protection.
The Oxford Area School District maintains information about the outbreak, immunity requirements and public health guidance at https://www.oxfordasd.org/for-staff/2026-measles-update.
For additional reporting on the school closure and Pennsylvania’s measles outbreak, read the coverage from CBS Philadelphia at https://www.cbsnews.com/philadelphia/news/oxford-area-high-school-pennsylvania-closed-measles/ and 6abc/WPVI at https://6abc.com/post/oxford-area-high-school-closed-friday-confirmed-case-measles/19923434/.
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