Selena Simmons-Duffin

As states begin to relax mask mandates, individuals have to make their own decisions about how and when to mask.

Swamped by thousands of calls a day, contact tracing programs have been forced to adapt. Even though they can't call everyone, experts say it's too early to give up on this pillar of disease control.

The Health Resources and Services Administration is distributing $66.5 million to community groups working across 38 states and Washington, D.C. to help with local vaccine outreach.

The first big hurdle was crossed when Pfizer shared its clinical trial data with the FDA. Now there are five more steps to get through before this vulnerable population can be vaccinated.

The White House launched two new efforts to help Americans get free access to rapid COVID tests. It's still hard to find tests, and reimbursement for tests bought at a store isn't necessarily easy.

When he came into office, Biden launched an ambitious seven-point plan for defeating the virus. Here's how experts score his results.

President Biden announced new measures to respond to the COVID surge. He is sending troops to hospitals in some states and said that more tests and masks are being ordered for distribution nationwide.

The Centers for Disease Control and Prevention held only two telebriefings in 2021. That lack of transparency has prompted criticism — and a pledge from director Dr. Rochelle Walensky to be more open.

The new CDC guidelines for COVID-19 isolation and quarantine have garnered a lot of criticism. And this is just one example of the agency's on going communication problems.

Subtle developmental differences in children whose brains seemed normal at birth underscore the need to follow children long term — a lesson that may be key for babies exposed to COVID-19.

President Biden is laying out his next steps for taking on the omicron variant, including giving out more at-home tests and sending support teams to overwhelmed hospitals.

President Biden is expected to address the surge in omicron cases, but is his administration's response fast and sufficient enough to meet what could be the most challenging month yet in the pandemic?

Coronavirus cases are beginning to surge again in the U.S., just weeks after the discovery of the omicron variant. Data from the U.K. shows it is even more transmissible than delta.

The White House continues the same COVID-19 messages and strategies even as models suggest an omicron surge is coming.

Nine states have active mask mandates, even as the new variant is quickly moving in on the U.S. Despite their political unpopularity, research shows masks still work and could save lives.

A new statewide mask mandate in California went into effect Wednesday, bringing the total number of states with mask mandates to 10. That has some public health advocates worried as omicron spreads.

As he prepares to leave his post of 12 years, Francis Collins reflects on the agency's biomedical advances, the dangers of polarizing medicine and the huge health gaps that still exist in the U.S.

Scientists may not know for a couple weeks yet how risky the new coronavirus variant will be to public health. But getting out front now about what is known helps dispel misinformation, they say.

Much is unknown about the omicron variant. Scientists are scrambling to gather information. But with the first case of omicron confirmed in the U.S., public health officials can't afford to be silent.

Physicians weigh in on what you need to know about the safety and efficacy of the vaccine, and how to think about the risks and benefits of vaccinating your kid