After a sharp uptick in flu cases in mid-December 2025, flu activity across the U.S. and Canada remains high.

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

Add Yahoo as a preferred source to see more of our stories on Google. A new flu variant known as subclade K is on the rise across the country. Although a spike in this particular strain of influenza, ...

A new strain of influenza has rippled through the United States, with Kansas being one of the highest-risk states, according ...

It's been less than a month since health officials reported the first known case of a new and more contagious coronavirus variant in Texas. The man, a Harris County resident, had no travel history.

Amid the push to get the COVID-19 vaccine to many as possible to stem the pandemic, a new variant of the coronavirus that exploded in Brazil and has since been reported in the U.S. is causing concern ...

The new coronavirus variant spreading globally, especially in parts of Asia, has not taken hold in Germany, according to the World Health Organization. The variant, known as NB.1.8.1, was first ...

SAN FRANCISCO (KGO) -- On Dec. 31, UCSF'S Dr. Charles Chiu and his colleagues were in a lab when they found what they are calling"L-452R," a California variant of COVID-19. "We actually discovered ...

The arrival of agriculture coincided with a sharp rise in a gene variant that protected against the virus that causes winter vomiting, researchers from Karolinska Institutet and Linköping University ...

Nepal, Feb. 2 -- Nipah virus, a deadly zoonotic virus, was first reported in Malaysia in 1998. The country documented a total ...