Not only does the HPV vaccine protect against human papillomavirus, but it also reduces the risk of cancers caused by HPV. Yet it only protects a person if it lasts long enough.

Facing more than 570,000 chikungunya cases in the Americas and 484 in the US as of early August, officials have been scrambling to slow the spread of the virus. One vaccine may have the potential to help.

Many worry about the diseases vaccines protect against, but a recent study showed that efforts to improve immunizations and treatments for at least one illness may be working.

The US Food and Drug Administration (FDA) has issued a statement warning against fraudulent Ebola treatments.

In the previous months, chikungunya cases have spiked in the Western Hemisphere. While locally transmitted cases have been confirmed in Florida, officials don't think the virus will spread rapidly in the US.

Everyone would prefer to avoid the flu, but, for older patients, the virus can pose a more serious threat. A new study suggests that a high-dose vaccine may better protect these patients.

The maker of an experimental Ebola treatment announced that it has run out of the medication.

As the Ebola outbreak in West Africa continues, health workers and their governments are looking for ways to save lives and prevent the spread of the disease. One experimental serum to treat Ebola has gained a lot of attention but also raised some ethical questions.

Preventing a mosquito's bite can sometimes mean more than preventing an annoying itch. A new official update provided insight into this summer's cases of one mosquito-borne illness.

Some viruses and bacteria travel through the air. Others travel in bugs and ticks — but how many of these reach children?