Experts are warning that yellow fever — which hasn’t had a major outbreak in the U.S. since 1905 — could make a comeback. (Photo illustration: Yahoo News; photo: Getty Image) When you think of yellow ...

If you plan on traveling abroad this summer, especially to regions within South America or Africa, it’s imperative to be aware of your risk of yellow fever, a potentially deadly flavivirus endemic to ...

The yellow fever vaccine is a live vaccine, meaning it contains a weakened form of the virus. For most people, a single yellow fever vaccine can provide lifelong protection against the virus. Yellow ...

Yellow fever is a hemorrhagic condition that can lead to a high fever, bleeding into the skin, and cell death in the liver and kidneys. If enough liver cells die, liver damage occurs, leading to ...

When a young man named Isaac H. Charles arrived in yellow-fever-ravaged New Orleans in 1847, he did not, as one might expect, try to avoid the deadly disease, which killed as many as half of its ...

On August 31, 1900, a young soldier named William Dean proved that mosquitoes transmit yellow fever. He accomplished this by getting terribly sick after volunteering to hold out his arm and let four ...

SÃO PAULO — “Good morning!” a loudspeaker blared recently in the working class São Paulo suburb called Jardim Monte Alegre. “We’ve got your yellow fever vaccine, and today we’re going house to house!

When Christopher Columbus arrived in the Caribbean in 1492, he brought Spanish visions of gold and glory, as well as new animals and pathogens. Pigs and rats ravaged the island ecosystems while ...

The yellow fever vaccine may help protect you against the yellow fever virus, a potentially fatal disease. It’s recommended for most people who are traveling to high risk areas. The yellow virus is ...

Yellow fever is a viral illness spread by mosquitoes in some parts of Africa and South America. You can take a single-dose ...