Oxford Area High School will be closed on Friday after it was confirmed that someone in the school community has a confirmed case of measles, according to the district’s superintendent. The closure comes as school district works to verify that all staff members have immunity against the diseas e. The Chester County Health Department is working with the Oxford Area School District to identify anyone who may have been exposed. “The health and well-being of our students, staff, and community are incredibly important to us, and we recognize that receiving this information can raise questions, concerns, and uncertainty. Please know that we are working closely with the Chester County Health Department (CCHD) and are following their guidance every step of the way,” superintendent Dr. David Woods wrote in a statement. According to Dr. Woods, the high school building has undergone enhanced cleaning procedures. School officials say that any students or staff members who are not vaccinated or cannot prove their vaccination status that they cannot attend school or activities and they must quarantine for 21 days. Pennsylvania passes 1,000 measles cases The closure of Oxford Area High School comes just days after Pennsylvania reported reaching more than 1,000 measles cases. According to CDC data as of Oct. 1, 2026, Pennsylvania is the state with the most measles cases in the country. The total number of cases in the Philadelphia region was 95 as of Oct. 5, with the large majority being in Chester County: Berks: 6 Bucks: 0 Chester: 84 Delaware: 0 Lehigh: 2 Montgomery: 3 Northampton: 0 Philadelphia: 0 The most up-to-date information on cases, hospitalizations, and deaths is available on the Pa. Department of Health’s measles dashboard. Measles in Pennsylvania Pennsylvania Oct 5 At over 1,000 cases, Pa. has largest measles outbreak in the U.S., officials say Pennsylvania Oct 1 Pennsylvania health workers bring vaccines to communities amid measles outbreak Philadelphia Sep 19 Health officials warn of recent measles exposure at PHL Airport Children's Hospital of Philadelphia Sep 17 Possible measles exposure reported at the NICU at CHOP, officials say Pennsylvania Aug 28 Gov. Shapiro and RFK Jr. clash on measles outbreak as cases rise in Pennsylvania ...read more read less