Coronavirus

If the omicron variant of the coronavirus is different enough from the original variant, existing vaccines might not be as effective.

A needle-free COVID-19 vaccine now in human trials could protect us against both this disease and future coronavirus outbreaks.

A new chewing gum may help reduce the spread of COVID-19 by neutralizing the virus before it can leave an infected person’s mouth.

There is no rule that will force Omicron or another COVID variant to become less deadly over time, but there is reason for hope.

Omicron is a new 'variant of concern' but there's still so much about it that we don't know.

The U.S. has brokered a deal between Johnson & Johnson and the COVAX initiative to get COVID-19 vaccines to people in conflict zones.

Pfizer’s antiviral pill to treat COVID-19 cut the risk of hospitalization or death by 89%, according to early results from a phase 2/3 trial.

Drug maker Merck has agreed to license a promising antiviral pill to treat COVID-19 to low- and middle-income countries for free.

Americans eligible for COVID-19 booster shots no longer need to stick to one brand. Here’s why that’s a big deal.

An FDA panel voted to authorize Pfizer’s COVID-19 vaccine for kids ages 5 to 11. Here’s what you need to know about it.