A child’s death this past week in Texas is the first U.S. death from measles, a highly contagious but preventable respiratory disease since 2015, according to the U.S. Centers for Disease

With the number of highly contagious measles cases rising in Texas, the San Antonio Metropolitan Health District shared more details about the possible exposure in the city after an individual who tested positive for the virus visited multiple locations in the city.

As the measles outbreak in West Texas continues to expand, San Antonio’s health officials are raising awareness about the virus.