In rare instances, the live virus in oral polio vaccines can mutate and become infectious, causing new outbreaks.

Merck’s Ervebo gets its first regulatory greenlight. A decision from the US Food and Drug Administration is expected in the next few months.

Two studies present biological evidence that measles infections in unvaccinated children wipe out immune memories of other pathogens, putting the kids at risk of other deadly diseases.

Children with acute flaccid myelitis are more likely to have antibodies against the viral family in their spinal fluid than are children without the illness.

The 2019 Lasker medical and research awards celebrate advances in scientists’ understanding of T and B cells, Herceptin antibodies for treating breast cancer, and vaccine coverage around the globe.

Antibiotics disrupt the immune response to the influenza vaccine in people who haven’t recently had exposure to the virus or immunization.

The number of measles cases this year is already more than all of the cases reported in 2018.

Mathematical models reveal that current vaccination rates in Texas schools could pave the way for the virus to spread to hundreds of people.

The field is young, but predicting antigens produced by patients’ malignant cells could yield successful treatments for individuals with a range of cancer types.