Richard Harris

Dr. Anthony Fauci helped guide the U.S. through the COVID crisis, and earlier in his career played a key role in the response to AIDS. He has served under seven presidents.

Publisher after publisher rejected the memoir before Doubleday took a chance in 1997. At its core, the book is about the power of relationship and focusing on others.

Luc Montagnier, the scientist who discovered the virus that causes AIDS, has died at 89. His key contribution came at a time when AIDS was mysterious and uniformly deadly.

Scientists who study mushrooms get a boost from a network of sophisticated aficionados who tromp through the forests observing oddball species and sharing valuable information about their finds.

Though the odds are comparable, many parents worry more about the less familiar disease. New mask guidelines have heightened anxiety. Experts explain the actual versus perceived risks of severe COVID.

A mushroom thought extinct in the US for 100 years has been rediscovered. It's an example of the remarkable synergy between amateur and professional fungus aficionados.

The risk of serious COVID-19 illness in children is comparable to their risk from the flu, but many parents seem more concerned about coronavirus. The issue of risk perception has a lot do with it.

The Centers for Disease Control and Prevention say fully vaccinated people against COVID-19 can resume activities indoors or outdoors, in gatherings large or small, without masks or distancing.

Drugs that can help keep COVID-19 patients out of the hospital are playing only a small role in Michigan, where the pandemic is accelerating. Logistical challenges are to blame.

Drugs that can help keep COVID-19 patients out of the hospital are playing only a small role in Michigan, where the pandemic is accelerating. Logistical challenges are to blame.

Government health officials are recommending a "pause" in vaccinations with the Johnson & Johnson COVID-19 vaccine. We're answering your questions as we learn more.

Researchers are reporting some progress in their search for drugs that tamp down the overwhelming immune reaction that can kill a patient with COVID-19.

A medical team in New York City says it has performed the first complete surgical transplant of a trachea. These kinds of transplants are one of the last big transplant challenges.

Drugs to help tamp down the immune system's over-reaction in COVID-19 are showing promise and could help prevent hospital deaths.

A Baltimore company trying to produce COVID-19 vaccines had to throw out a bad batch of the Johnson & Johnson product. That sets back efforts to expand production of this vaccine.

Scientists have launched a study of college students to find out whether people who are vaccinated against COVID-19 can still spread the virus. That's a big unanswered question about the vaccine.

AstraZeneca has updated the data about its COVID-19 vaccine after criticism that its previous statement was based on incomplete information. The update still finds that the shot is safe and effective.

Many doctors have used antibiotics to treat COVID-19 patients, but that's largely unnecessary — and could even promote drug-resistant germs.

Infusing blood plasma from people who have recovered from COVID-19 into sick patients looks good on paper. But studies of the treatment haven't found benefits.

People who have been sick with COVID-19 may need only one dose of the normally two-shot vaccines. If that became policy it could extend vaccine supplies, but logistical challenges are daunting.