The seasonal flu shot is a yearly vaccine that protects against the flu, or influenza. Here's what you need to know about it.
Vaccines help protect people from diseases. They contain "weakened" or "dead" germs, such as viruses or bacteria, which stimulate the body's immune system in a manner that can prevent us from getting sick with harmful pathogens. Here's the latest science news on vaccines.Vaccines
The HPV vaccine reduced cases of cervical cancer by 87% among women in the U.K. who received the vaccine when they were 12 or 13 years old, according to a new study.
Researchers in Israel say they've found a possible link between the Pfizer-BioNTech COVID-19 vaccine and cases of heart inflammation called myocarditis in young men.
Scientists use herd immunity to describe the point at which a population is sufficiently immune to a disease to prevent its circulation.
In the early 1950s, Dr. Jonas Salk and Dr. Albert Sabin each found a way to protect the world from poliomyelitis, the paralysis-causing disease commonly known as polio. Here's how they did it.
Parents' fears about vaccine safety may prompt them to eliminate or delay vaccinations, but doing this can jeopardize an infant's health.
Measles is making a comeback. Here's what you should know about one of the most contagious infectious diseases in the world.
The measles can be dangerous for people of all ages, but the highly contagious virus poses a particular threat to pregnant women.
Many very large cities are in regions most in danger of new measles outbreaks in the United States, due to anti-vaccine movements.
Mumps is an unpleasant and highly contagious disease, but a simple two-dose vaccine is 88% effective against the infection.
A new cancer "vaccine" that's injected directly into a single tumor can trigger the immune system to attack cancer cells throughout the body, a small new study suggests.