The US has confirmed more than 480 measles cases across 19 states, the highest total since an outbreak in 2019 sickened more than 1200 people

The number of measles cases associated with an outbreak in western Texas has grown to 400 cases amid reports of some children taking unhealthy amounts of vitamin A.

A measles outbreak that started in Texas has already spread to two other states and experts worry this number could grow.

The latest data from the Centers for Disease Control and Prevention show 378 people in 18 states have been diagnosed with measles. Outbreaks have occurred primarily in the South Plains and Panhandle regions of Texas and neighboring Lea County, New Mexico, according to the CDC.

As measles spreads across the U.S., a few fully vaccinated people have contracted rare breakthrough cases. Here's what to know and why vaccination is still important.

A person not infectious in Minnesota may have exposed people while traveling in Washington, D.C. The state health department says the person was vaccinated but still advises vaccines protect most people from measles.

As a measles outbreak spreads across the United States, doctors are now seeing a new and unexpected danger: children getting sick from taking too much vitamin A.

Public health leaders are horrified by Robert F. Kennedy Jr.’s approach to measles, but government and industry are responding to him.