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
We ask experts to explain why the measles outbreak is happening now and how the vaccine can protect against the virus' spread.
The sharp rise in measles cases in the U.S. infected with measles is due to people not being vaccinated against the disease, officials say.
The general public and scientists disagree on a wide range of scientific topics, from the safety of genetically modified foods to the cause of climate change.
This year's flu vaccine is not very effective at preventing the flu, particularly among adults, according to new estimates from the Centers for Disease Control and Prevention.
Seven people from several parts of California and two Utah residents are now confirmed to have measles, and three more Californians are suspected to have the disease, health officials stated.
Here is our annual listing of some of the more egregious retractions and questionable scientific papers of 2014.
About three quarters of parents would consider removing their child from a day care center where some of the other kids were unvaccinated, a new survey found.
When Jonas Salk and Albert Sabin developed vaccines for polio, they stopped a brutal disease in its tracks.
Ebola may be the most feared disease right now, but for most of the 20th century, outbreaks of another disease left thousands of people paralyzed or confined to breathing machines: polio.
In a new recommendation this flu season, the Centers for Disease Control and Prevention says that the nasal spray is the preferred flu vaccine for kids ages 2 to 8. Here's what you need to know.
More U.S. children and adults are getting vaccinated against the flu, but public health officials say there's room for improvement in vaccination rates.
Chickenpox is a contagious disease characterized by many itchy, red bumps all over the body. Later in life, adults can develop a similar condition called shingles.
Pregnant? Then you should get a flu shot, according to new guidelines from the American College of Obstetricians and Gynecologists.
Despite the discovery of a long-forgotten stash of the smallpox virus, there's virtually no risk that the disease could spread in the general public, experts say.
Serious reactions to vaccines are rare among children, and vaccines are not linked to autism, according to a new review of vaccine safety in kids.
This year's flu season saw a lower rate of death and doctor's visits for flu compared to last season, but a higher rate of flu-related hospitalizations among baby boomers, according to a new report.