(CNN) -- A new study provides early evidence that a Covid-19 vaccine might be effective against two new coronavirus strains first identified in South Africa and the UK, despite a concerning mutation.

The flu shot works by introducing your body to antigens, which helps your immune system produce antibodies that allow your body to fight infection.

The new coronavirus can live in the air for several hours and on some surfaces for as long as two to three days, tests by U.S. government and other scientists have found. Their work, published last ...

Like storm waves battering a ship, new versions of the SARS-CoV-2 virus have buffeted the world one after another. Recently, scientists keeping tabs on these variants noticed a trend: Many carry the ...

Since the emergence of SARS-CoV-2 in 2019, the virus has accrued a variety of mutations to infect its human hosts more effectively. Certain antiviral treatments work by increasing the rate of these ...

People who contract COVID-19 but never develop symptoms — the so-called super dodgers — may have a genetic ace up their sleeve. They’re more than twice as likely as those who become symptomatic to ...

New research shows how small shifts in the molecular makeup of a virus can profoundly alter its fate. These shifts could turn a deadly pathogen into a harmless bug or supercharge a relatively benign ...

Scientists are warning the public about bird flu after a patient in Louisiana showed mutations that could increase the transmission of the virus. The Centers for Disease Control and Prevention ...

A strain of H5N1 avian influenza virus found in a Texas dairy worker who was infected this spring was able to spread among ferrets through the air, although inefficiently, and killed 100% of infected ...