A vaccine essentially helps your immune system crack the code of a certain illness.

See how a new canine vaccine can help prevent tooth and gum disease in this video from Medialink.

The vaccine can help protect your daughter from getting genital warts and cervical cancer.

Your doctor can tell you which vaccines can help you stay healthy.

The vaccine also helps prevent the spread of the virus.

Just click "My Results" to find out which vaccines can help you.

So the vaccine may help fend off symptoms.

Researchers suggested that a vaccine against the virus might help prevent transplant failures.

The vaccine can help prevent serious pneumococcal diseases, such as meningitis and blood infections.

Attempts are being made to develop vaccines to help cure chronic infections, as opposed to preventing disease.