San Antonio residents are being alerted to a possible exposure to measles that occurred earlier this month. Local health officials are urging the public to remain vigilant, review their vaccination status, and monitor for symptoms. The Metropolitan Health District has provided a timeline of potential exposure locations to help residents assess their risk.

On February 15, 2025, an individual who later tested positive for measles visited several locations across San Antonio. From 10:00 a.m. to 2:00 p.m., they were present at The University of Texas at San Antonio Main Campus. Later, between 2:30 and 5:30 p.m., they visited multiple attractions on the Riverwalk. That evening, from 6:00 to 8:00 p.m., they dined at a seafood restaurant in Live Oak. Local officials are urging anyone who was present at these locations during the specified times to be cautious, watch for symptoms, and seek medical attention if necessary. Public health authorities emphasize the importance of staying up to date with vaccinations to prevent the spread of measles, especially during ongoing outbreaks.

Current Measles Situation in Texas

This possible exposure is part of a growing measles concern in Texas. Since late January, 90 confirmed measles cases have been reported across seven counties, with 16 individuals requiring hospitalization. Most cases have been identified in Gaines County. Additionally, health officials in Hays County have reported another case linked to exposure at a university and a restaurant on February 14, raising concerns about the continued spread of the virus. Measles is a highly contagious virus that spreads through respiratory droplets. It can linger in the air for up to two hours after an infected person leaves an area. Even brief exposure in an enclosed space can lead to infection for those without immunity. With the increasing number of cases, health authorities emphasize the need for proactive prevention measures.

Understanding Measles and Its Symptoms

Measles is a viral infection that primarily affects the respiratory system. It spreads through direct contact with infected droplets and through the air when an infected individual coughs or sneezes. The virus remains active and contagious in the air or on surfaces for several hours, making it easy to contract in crowded public spaces. The initial symptoms of measles typically appear one to two weeks after exposure. Common signs include a high fever that can reach 105°F, cough, runny nose, and red, watery eyes. A rash usually develops three to five days after the onset of symptoms, beginning on the face and then spreading downward across the body. Tiny white spots may also appear inside the mouth a few days before the rash emerges. An individual with measles is contagious from about four days before the rash appears until four days afterward.

Prevention and Response Measures

The best way to prevent measles is through vaccination. The measles-mumps-rubella (MMR) vaccine is highly effective in providing immunity against the virus. Two doses of the vaccine offer nearly complete protection, significantly reducing the risk of infection. While breakthrough cases can occur in vaccinated individuals, symptoms are usually milder, and the likelihood of spreading the disease is lower. For individuals who suspect they have been exposed to measles, it is crucial to take immediate precautions. Those who develop symptoms should isolate themselves from others and contact a healthcare provider before visiting a medical facility to prevent further exposure. Reviewing vaccination records is essential, particularly for parents with young children who may not have received both doses of the vaccine.

Controlling the Spread in Schools and Public Spaces

Measles outbreaks require strict measures to limit the spread, especially in group settings such as schools and childcare facilities. According to Texas health regulations, schools must exclude unimmunized students for at least 21 days following potential exposure. Similarly, individuals with confirmed or suspected measles should avoid public places, including workplaces, until they are no longer contagious. Public health officials continue to monitor the situation and encourage community-wide efforts to prevent further cases. Vaccination remains the most effective strategy for controlling measles outbreaks and safeguarding public health. Residents who believe they may have been exposed should consult their healthcare provider for further guidance. Staying informed and taking proactive measures can help prevent the spread of measles and protect vulnerable populations, including infants, pregnant individuals, and those with compromised immune systems.