(ABC 6 News) — New CDC data shows there have been almost 1300 confirmed cases of measles nationwide this year. That is the highest number in more than three decades, and it is a big spike from last year’s roughly 300 cases.

The US Centers for Disease Control and Prevention on Wednesday tallied the highest number of US measles cases since the disease was declared eliminated a quarter-century ago, just as a key Senate committee split the vote to advance President Donald Trump’s nominee to lead the public health agency.

Fox News senior medical analyst Dr. Marc Siegel weighs in on childhood obesity concerns and the surge in measles cases across the U.S. on 'America's Newsroom.'

About three dozen of the nearly 1,200 measles infections in 2025 have been in people with two measles vaccine doses, the CDC says.

The U.S. is having the worst measles outbreak in decades. Here’s what experts recommend you do to avoid getting sick.

A local medical office closed on Wednesday due to a possible measles exposure. A post on the Mid-Ohio Valley Health Department Facebook page Thursday morning said the Mid-Ohio Valley Medical Group “notified their patients that they would be closed as they assessed a potential measles case in their building.

Measles was considered eradicated in the United States in 2000. For the first time in 25 years, cases have reached a new high.

Los Angeles, Orange, Riverside and San Bernardino counties have reported eight cases so far this year compared to 10 total in 2024.