There is a measles outbreak in the South Plains region of Texas, with 58 confirmed cases, primarily in Gaines County, which accounts for 45 cases.

This is the tip of the iceberg,” said Rekha Lakshmanan, chief strategy officer for The Immunization Partnership in Houston, a nonprofit that advocates for vaccine access. “I think this is going to get a lot worse before it gets better.

The ongoing Texas measles outbreak has rapidly grown to the largest the state has seen in decades, spreading through mostly unvaccinated residents and creeping across both county and state lines.