A Texas mother of two, Brianna Henderson, was diagnosed with a rare and potentially fatal heart condition after having her ...

California has already reported more measles cases this year than in all of 2024, a worrisome development that comes as the ...

California has more homicides than any state, but it also has the largest population, meaning its rate might not be as high ...

ABC News’ Senior White House Correspondent Selina Wang reports on the latest from the CDC’s vaccine advisory committee.

A presentation scheduled for a CDC vaccine meeting claimed that a vaccine preservative could cause long-term brain effects, but the study it cited doesn’t appear to exist.

Leaders say the warm and rainy weather leads to more mosquito activity and a higher risk of illnesses transmitted by mosquitoes.

This month, the number of measles cases reported in California so far in 2025 jumped above the total for all of 2024.

Kennedy said that removing all 17 members of the CDC's vaccine advisory panel was "necessary to reestablish public confidence ...

After 10 years in Covington, GA, this UPS driver delivers one last package, with hugs and treats for his favorite dogs before ...

As protesters in Los Angeles denounced President Donald Trump's mass deportation policies -- sometimes leading to clashes ...

Your morning catch-up: Anti-vaxxers at the CDC, the world’s largest wildlife crossing enters stage two and more big stories. ... California has seen more measles cases this year than all of 2024.