Collin County warns of possible measles exposure in Plano

Collin County Health Care Services issued a public health advisory after confirming a measles exposure in Plano, with local reports tying the case to a person who visited three stores in the city during April. The warning mattered immediately for parents, school staff, day-care operators and residents with weakened immune systems, because measles spreads through the air and can linger in a room long after an infected person leaves.

The county advisory, titled Confirmed Measles Exposure in Collin County: Public Health Advisory Issued, came as CBS Texas and FOX 4 identified the case as a middle-school student or child who tested positive. NBC 5 also reported on the possible exposure in Plano. County health materials say symptoms can appear seven to 14 days after exposure, starting with fever, cough, runny nose, red eyes and then a rash. That timing is why people who may have been in the same indoor spaces are urged to watch closely for illness even if they felt fine at the time.

Public-health guidance from Texas agencies says measles virus can remain infectious in the air for up to two hours after an infected person leaves a room. In a city like Plano, where shopping corridors, medical offices, restaurants and family destinations draw steady foot traffic, that turns a short errand into a wider risk for anyone who shared the same indoor air. Schools, day cares, churches and employers often respond to notices like this by checking attendance, reinforcing isolation rules for anyone who develops fever or rash, and making sure vaccination records are current.

The clearest protection remains the measles, mumps and rubella vaccine. Residents who are unsure whether they or their children are up to date should verify those records now, especially families with infants too young to be fully vaccinated and people whose immune systems are weakened by illness or treatment. Anyone who develops symptoms should avoid walking into a clinic, urgent care center or emergency room without calling ahead, so staff can limit exposure to other patients.

The Plano warning landed against the backdrop of a larger 2025 measles surge in Texas. State outbreak materials cited 146 cases and 20 hospitalizations in West Texas as of Feb. 28, along with 79 unvaccinated patients, 62 with unknown vaccination status, five vaccinated cases with at least one MMR dose, 116 cases in people 18 or younger and one death in the outbreak area. That broader spread had already put North Texas on alert, including after a Willow Springs Middle School student in Lucas tested positive.