A Texas measles outbreak has doubled in the last week to 124 cases, state health officials said Tuesday, a day after they warned a person infected with the highly contagious disease had traveled from the outbreak zone.

Texas is in the midst of the worst measles outbreak in decades, with 90 cases across 7 counties. Here’s what to know.

Measles outbreak in Texas continues to grow, with 124 cases now reported. Public health officials also warn of potential spread in San Marcos and San Antonio.

The outbreak is primarily affecting West Texas, but officials in San Antonio, New Braunfels and San Marcos are monitoring cases after an infected person recently visited the area, according to the Texas Department of State Health Services.

A measles outbreak in northwest Texas grew to 124 cases on Tuesday, and exposures have been reported elsewhere in the state.

As the measles outbreak in Texas keeps spreading, parents who previously chose not to vaccinate their children are now lining up to get their kids the MMR shots.

"Take what works for you & leave the rest,” the hairstylist, who used GLP-1 medication, said Measles cases have also spread to neighboring New Mexico, sickening primarily children and teenagers Amir Hines is facing life in prison if he is convicted of his son Karter Holloway’s 2024 murder in Wake County.

Louisiana Surgeon General Ralph Abraham said the best protection against the measles is the vaccine as the outbreak expands in neighboring Texas.