The H5N1 bird flu virus has historically extracted a heavy toll when it infects humans, with nearly half of confirmed cases ...

When you get the flu, viruses turn your cells into tiny factories that help spread the disease. In this animation, NPR's Robert Krulwich and medical animator David Bolinsky explain how a flu virus can ...

Scientists have decoded the Swiss genome of the 1918 flu virus from a century-old specimen, revealing early adaptations for ...

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

"When a flu virus infects a cell, its genetic material goes in as multiple different segments or pieces," she explained in the video, posted November 18, 2024.

An ABC News exclusive from Rotterdam where the virus was created. ROTTERDAM, Holland Jan. 20, 2012— -- It is the stuff of science fiction: scientists tamper with a killer bird flu virus and ...

This mutation-by-mutation analysis of the 1918 flu virus would have been impossible to imagine at the time of the pandemic. Doctors then hadn’t even figured out that influenza was caused by a virus.

Bird flu continues to affect the availability and price of eggs as the disease hits farms and wipes out flocks. Last year, bird flu killed more than 40 million egg-laying birds.

All four flu pandemics — in 1918, 1957 and 1968 and the swine flu pandemic of 2009 — were caused by Type A viruses. Influenza B viruses, however, only circulate in humans.

Remnants of flu virus found in 1918 pandemic victims. The 1918 pandemic, often called the Spanish Flu because news reports of it circulating in neutral Spain flowed freely during World War II ...

The avian flu virus isolated from a hospitalized teenager in Vancouver has mutations in key areas that could help the virus spread more easily in humans, scientists say. CNN values your feedback 1.