Maria Godoy

On Monday, a federal judge struck down the CDC's mask mandate for public transportation. Less than 24 hours later, videos emerged on social media of passengers celebrating.

Health officials argue the protection of the COVID vaccine booster wanes over time and say some people need a second booster. But other infectious disease experts say three shots are enough for now.

The better the air quality in schools, the better students do academically and healthier they are. Improving air quality is expensive, so advocates hope money set aside under the Biden Plan will help.

Boosting ventilation and filtration not only lowers the risk of transmission, it's also linked to higher test scores and better health. But making upgrades is more complex than it sounds.

The CDC is dropping its guidance for universal indoor masking, instead recommending masking pegged to local conditions where spread of the virus is considered high risk.

While many states have already lifted their statewide mask mandates, many mandates remain in place. But the science is mixed about masks effectiveness in schools — especially for kids.

The CDC says you can end isolation after five days. But emerging research shows with omicron, many people could be infectious for several days past that. So how do you determine if you're good to go?

A new study shows that getting the COVID vaccine during pregnancy confers significant protection to infants after birth.

While governors in several states are moving to lift mask mandates, the Centers for Disease Control and Prevention today reiterated that it's not changing it's mask guidance.

Recent research and anecdotes suggest some people are testing negative on rapid tests even after they have symptoms, then later testing positive. Here's what researchers think is going on.

Making exercise a daily habit can feel daunting if it feels like it counts only when you go all in. Instead, remember that every small movement counts.

As people use at-home rapid tests more and more, they're noticing some idiosyncrasies with the results. Here's the latest research examining the accuracy of these tests.

The CDC says high-filtration masks like N95s provide the best protection. Here's how to find a good one — and avoid the fakes. Plus tips on how to fit them and how long to wear them.

The CDC is expected to recommend that Americans to upgrade their masks to high-efficiency respirators. But how do you find one that fits you — and is legit?

Testing has become more important than ever as people try to get their lives back to normal. But what's the best way to get tested, which tests are best, and are rapid antigen tests even accurate?

Trying to eat less meat? Make sure your meat-free meals are just as satisfying by seasoning your vegetables with the same spices you use to cook meat. It will carry some of that flavor over.

To block a variant this transmissible, scientists say you need an N95 or other high-filtration mask. Here's how to find a good one and when to wear it.

The omicron variant is so contagious that researchers who study transmission say consumers should consider wearing N95s and taking a rapid COVID test shortly before gathering with friends and family.

The charity Partners in Health aims to improve health services in lower income places like Haiti and Rwanda. Now it's setting up a permanent presence in the U.S. with an $11 million federal grant.

There's a lot we don't know about the new COVID variant. Many people are wondering if they can fly and go to holiday parties and restaurants — or should just hide out. We asked doctors for answers.