Pneumonia can be a serious illness that can lead to time in the hospital for little ones. But a new vaccine may prevent the disease in this population.

Many people worry that vaccines meant to prevent disease may cause other illnesses. But a recent study found that vaccines likely did not cause multiple sclerosis (MS) or disorders like it.

Opting for a vaccine that could possibly prevent cancer may seem simple on paper, but families across the nation have been slow to adopt one such vaccine.

Vaccines can be used to protect against both viruses and bacteria. But bacteria have a secret weapon that makes them harder to fight.

One of the most common reasons for diarrhea among children is rotavirus. But a vaccine for rotavirus was introduced in 2007.

Measles cases are the highest they have been since 2000, exceeding the previous high in 2011. L ike this year's, t he 2011 outbreaks resulted from low vaccination coverage.

Any time a new vaccine is introduced, researchers pay special attention to what happens in the next several decades to the disease that vaccine protects against. Chickenpox is no different.

Some parents may feel it's better to delay their children's vaccines instead of following the officially recommended schedule. But that could present more risks from side effects.

Vaccinations can offer protection that prevents disease and saves lives. For HIV-infected patients, this protection may not last as long.

Measles is no longer a widespread issue in the US, but that doesn't mean infections and outbreaks can't occur, as one US state is currently seeing.