Allison Aubrey

But the CDC is urging all people — vaccinated or not — to continue avoiding medium or large gatherings since it's still learning how well the vaccines work to curb the spread of the virus.

Johnson & Johnson vaccinations have resumed, which could facilitate new vaccination pop-up clinics. At the same time, doctors in rural areas are strategizing on how to get people to get the shot.

Today, eligibility is open to all adults in every state. Yet, there are headwinds to getting the rest of the population vaccinated.

From sporting arenas to colleges and cruise ships, many businesses are planning to ask customers to prove they've had their shots. Smartphone apps may be coming soon.

With more than 3 million vaccinations a day, there are now some areas of the country where supply of COVID-19 vaccines outstrips demand, while other areas are seeing a shortage of shots.

Schools have long required vaccinations for several diseases. Now, some colleges and cruise ships are making immunization against COVID-19 mandatory, igniting concerns of equity and civil liberties.

As vaccine makers start testing re-tooled versions to target variants, how long will immunity hold up? And as vaccines open to all adults, some are still waiting. Why?

The CDC says people who have been fully vaccinated can travel safely two weeks after their final dose. But the agency is still advising against nonessential trips during the current rise in cases.

After weeks of decline, coronavirus cases are up in many states. An ex-Trump COVID-19 task force member says hundreds of thousand of deaths may have been prevented if stronger action had been taken.

About 2.5 million people a day are being vaccinated in the U.S., and 31% of adults have received at least one shot. But 55,000 new COVID-19 cases are being reported daily and there are new hot spots.

In many places, the 6-foot guidance was interpreted as requiring schools to operate on part-time schedules in order to reduce class sizes. A 3-foot rule would allow many more schools to reopen fully.

The Biden administration announced a $12 billion plan to expand the ability of schools to test students, teachers and staff for COVID-19. Some Massachusetts schools are doing this, but it's expensive.

The CDC still advises against nonessential travel, but many infectious disease experts say a trip to the beach or a family vacation can be done pretty safely if you do it right.

The CDC released new guidance that allows people fully vaccinated against COVID-19 to resume some pre-pandemic activities, like gathering indoors with other vaccinated people without wearing masks.

New guidance from the Centers for Disease Control and Prevention says that people fully vaccinated against COVID-19 can gather indoors in some circumstances but should keep wearing masks in public.

An increasing number of Americans expect something like "normal" to return within the next six months. But health officials say we should stay vigilant even as the pace of vaccinations accelerates.

What newfound freedoms can people who have been vaccinated feel safe about? With only about 20% of U.S. adults vaccinated against COVID-19, experts explain why some restrictions remain in place.

Johnson & Johnson's vaccine ships this week. It is 66% effective at preventing mild to moderate cases of COVID-19, and 93% effective at keeping people who do get the disease out of the hospital.

Gyms may be a particularly risky place for getting the coronavirus. A pair of CDC studies show many people got the virus during indoor fitness classes despite social distancing and capacity rules.

The U.S. is about to cross another grim milestone: nearly a half million people have died from COVID-19. New cases continue to decline, but there is an urgency to pick up the pace of vaccinations.