You called in sick yesterday because you thought you had the flu, but today you feel even worse. You have heavy bleeding and delirium because you’ve got one of the world’s most deadly viruses. What ...

From the Ebola to COVID-19, diseases caused by viruses have killed humans throughout history. Viruses are much older than human beings, possibly even older than the first cellular life. More than 600 ...

Americans traveling abroad should use insect repellent and protective clothing to prevent chikungunya virus, as no vaccine ...

The most important vaccines in history have prevented the spread of debilitating, infectious diseases like polio, smallpox, ...

First imported cases of the Oropouche virus; authorities urge the population to seek immediate medical attention in case of ...

A year ago, Rwanda faced its first outbreak of Marburg virus. Dr. Tsion Firew remembers how scared she was — and how that ...

The virus will not cause any symptoms for the majority of people. However, about one in five will experience a fever, ...

What's the world's most dangerous animal? Surprise, it's not bears. There are 54 types of this animal in Connecticut, some ...

A vaccine against a deadly disease that affects young elephants is shown to be effective in a world-first trial.