Have you ever wondered why you have to get a flu shot every year, but some vaccines are one-and-done? It all has to do with how and how fast viruses evolve - and that depends on mutation rates.

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 ...

A variant strain of the coronavirus, one that was first discovered in the United Kingdom, is now the dominant strain of the virus circulating throughout the United States, CDC Director Rochelle ...

COMPANY PROMOTED AND MONITORED OPIOIDS. RIGHT NOW, AT 446 IN THE AFTERNOON, WE TURN OUR ATTENTION TO FIVE ON YOUR HEALTH, AND THERE IS A NEW VARIANT OF THE FLU VIRUS THAT’S CREATING AN EARLY SURGE OF ...

Chinese researchers have identified a key mutation in the Ebola virus that may explain why one of the deadliest outbreaks in recent history spread so widely and persisted for so long. Their findings ...

A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated version of the virus, according to a report published this week in the New ...

(CNN) — The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan.