The seventh case of measles linked to an outbreak at Manatee Bay Elementary School in Florida was confirmed by officials on Tuesday.

National MMR coverage has dropped 2% from the 2019-2021 school year to the 2022-2023 school year,

A doctors' group is offering free measles vaccines for unvaccinated residents in Philadelphia to fight an outbreak that has infected eight people so far.

What factors led up to the fumbled rollout of the brand-new RSV shot for babies that has pediatricians worried and frustrated.

A recent CDC report found Idaho is lagging behind the rest of the U.S. when it comes to routine childhood vaccinations. Experts reveal why that may be the case.

Domestic measles cases surged in 2019, with an estimated 1,274 people sick in at least 31 states -- the greatest number of cases reported since 1992, the CDC says.

A new CDC report published Thursday found 93% of kindergartners met school requirements for childhood vaccinations, lower than the 95% seen pre-pandemic.

The CDC issued a Health Alert this week, warning Americans about rising measles cases linked to international travel.

The most important thing is to get vaccinated no matter the circumstances, doctors say.

Pfizer announced Thursday that its vaccine candidate for respiratory syncytial virus was 85.7% effective in preventing lower respiratory tract illness in older adults.

Public health experts tell ABC News which vaccine is used to protect against polio and why most Americans are unlikely to be infected with the disease.

Children in London are being offered polio vaccine boosters after sewage samples with the virus were found in multiple areas across the city.

New York health officials said a patient was infected with vaccine-derived polio. Here's what that means.

The CDC found a more than 80% decline in HPV infections nationally.

The Pfizer and Moderna vaccines are safe and effective in pregnant and lactating women and those women are able to pass protective antibodies to their newborns.

One-third of parents are delaying immunization

An Illinois pediatrician who died by suicide last year may have forged patient's vaccination medical records, according to investigators.