External factors seem to have limited the impact of lifting the restrictions, but experts worry another wave might come in the fall.
People who are fully vaccinated can spread the Delta variant just as easily as those who are unvaccinated, according to an internal CDC document.
Experts worry about breakthrough cases in older people or those who are immunocompromised, or the virus mutating into a more dangerous strain.
Vermont has administered at least one vaccine dose to nearly 75% of its population. The milestone may indicate it has reached herd immunity.
Christopher Murray, director of the IHME, which the White House leans on for COVID-19 data, says we shouldn't drop our masks yet, especially indoors.
The Mid-Atlantic saw the most undiagnosed coronavirus cases - nearly 9 out of every 100 people - by July 2020.
Israel lifted some of its last coronavirus restrictions on Tuesday. Officials might end indoor mask requirements as soon as next week.
Aides to UK PM Boris Johnson fear that former top advisor Dominic Cummings will use his appearance before MPs to make damaging claims.
US states have scrambled to incentivize COVID-19 vaccinations in order to reach herd immunity as interest in the shots has plateaued.
Israel, the US, the UK are getting shots into arms most quickly. Brazil, India, Japan, and South Korea trail further behind.
There are over 2 million more first doses that need to be administered before 80% of adults and adolescents in LA County will have at least one shot.
These are Insider's biggest healthcare stories for May 4.
Vaccines bring the US closer to herd immunity, but more-contagious variants make the goal harder to reach.
One man struggled to get a second dose for his mother after she missed her appointment. Many are missing them because of access or scheduling issues.
More contagious variants and vaccine skepticism could still pose a barrier to herd immunity, scientists said.
Jeff Dunn, Bolthouse CEO, told the WSJ the goal was to reach "herd immunity" within the company's staff, some of who are sceptical about the shot.
The clinic first said the syringes had saline but later clarified they were empty. Pumping air into people's veins can cause air embolisms and block blood flow.