Blood centers are ramping up efforts to collect plasma from people who recovered from COVID-19 in hopes their coronavirus antibodies could save lives.

Coronavirus immunity tests are key to returning to 'normal.' But there are concerns that the problems with detection testing may also slow immunity testing.

One in three cases of COVID-19 in Sacramento County have been linked to church gatherings, public health officials said.

The program had worked with labs in Wuhan, China, and around the world to detect deadly viruses that could jump from animals to humans.

A top health official warns that San Francisco hospitals still could be overwhelmed with COVID-19 patients.

Treating patients with "moderate" COVID-19 is a way to stop the disease from progressing to a severe stage that would require mechanical ventilation.

The CDC now recommends that the public wear cloth face masks while also urging that high-grade equipment be reserved for medical personnel.

It's possible that the new coronavirus can spread from person to person simply by talking, or even breathing, according to preliminary studies.

How can the new coronavirus affect people so differently — killing some while leaving others blissfully unaware that they have been infected at all?

Face coverings and masks may help to stem the spread of the coronavirus. But how to keep them clean?

Inhaled nitric oxide appeared to kill the coronavirus that caused severe acute respiratory syndrome, or SARS, and it might work on COVID-19 as well.

Coronavirus continues to spread, but the Trump administration disbanded the team that could have helped.

A new study of 10 coronavirus patients in China gives further credence to the effectiveness of convalescent plasma therapy.

Miles de profesionales médicos extranjeros en un limbo inmigratorio

As Bay Area coronavirus infection rate eases, the focus turns to Southern California, especially L.A. County, with 6,000 cases and rising: a good week to "skip shopping altogether."

Several groups of researchers are testing different methods to divert critically ill COVID-19 patients from needing ventilators in the first place.

Dr. Colleen Kraft was part of the Emory University team that successfully cared for America's first Ebola patients. She now is a cool-headed stalwart who is soothing nerves during the coronavirus pandemic.

The public should realize that COVID-19 cases are likely to rise when stay-at-home orders are eased, officials said.

Is it safe to have sex with my partner or with a person I met on Tinder? Can I pick my nose at home? Do I need to disinfect my groceries? A virologist answers.

As researchers race to develop a vaccine for COVID-19, the potential for the coronavirus to perpetually rebound has ramped up the urgency in finding a worldwide cure.

California coronavirus curve: Fewer deaths, long quarantine

San Francisco has emerged something of a bright spot in California's battle against COVID-19, but it's too early to relax, officials say.

The coronavirus changed our lives. Health experts discuss how we might get back to normal.

Getty Images' John Moore documented emergency medical workers on the ground in New York in the first week of April as the coronavirus ravaged the state.

Some patients who have recovered from coronavirus infection are suffering lasting damage, including liver damage, heart damage and blood clotting problems.

A preliminary report on patients infected with the coronavirus suggests the drug remdesivir may lower the risk of death in those with severe cases of COVID-19.

A diagnosis of breast cancer is always accompanied by angst and uncertainty. It's even more fraught when it comes in the midst of the coronavirus crisis.

Until there's a vaccine to prevent infection with the new coronavirus, old vaccines against other germs might help. Scientists are testing them now.

Ultraviolet light may become an important tool for fighting the coronavirus by sterilizing masks and other high-touch items. We look at what UV light can and can't do.

CanSino Biologics of China is in the second phase of testing a coronavirus vaccine candidate, and a U.S. shot by Moderna and the NIH isn't far behind.

This may help explain why the coronavirus has hit the U.S. so hard: Obesity appears to be a risk factor for serious cases of COVID-19.

A study of COVID-19 patients and the people they likely infected suggests the coronavirus can spread for more than two days before symptoms appear.

The tobacco industry sees the sales potential in the pandemic, offers up freebie protective gear, doorstep deliveries, festive discounts.

With no treatment for the new coronavirus, some people are trying alternative medicines. In China and India, the government has advised them to do so.

Nurses around the world are risking their lives tending to coronavirus patients.

A new study by Stanford University, using antibody blood tests, estimates that the number of cases in Santa Clara County may be 50 to 85 times greater than what was previously known.

Hydroxychloroquine, the drug President Trump hailed as a coronavirus killer, had no beneficial effect for COVID-19 patients in two controlled trials.

Men contending with coronavirus infection may have a pair of vulnerabilities that could increase their risk of longer, more severe illness: their testicles.

A study shows roughly 4% of L.A. County residents have contracted COVID-19, suggesting it might be less fatal locally than originally believed.

There are two main types of coronavirus tests. One tells you if you have an active infection, and the other checks to see if you were infected before.

California is now giving coronavirus testing priority to asymptomatic people in high-risk settings such as nursing homes and prisons.

What do scientists wish they knew about the coronavirus? Which treatments actually work, what antibodies are good for, and which public health measures help.

Coronavirus: Autopsies reveal the first confirmed U.S. COVID-19 deaths occurred in Bay Area in February.

As people across the globe stay home to stop the spread of the new coronavirus, Earth is becoming cleaner and more wild.

You've heard the term "herd immunity." Here's what it means and why it's important as we think about returning to something like a normal life.

Is a second wave of the coronavirus outbreak inevitable? Scientists say that depends on the nature of the virus itself as well as our own behavior.

Coronavirus: After weeks of backlogs, it's getting easier to obtain a coronavirus test in California.

Studies are finding that cigarette smokers are more likely to have severe cases of COVID-19, the disease caused by coronavirus. Many lung doctors say that doesn't surprise them much.

Testing sewage for the coronavirus may tell scientists how much disease is in a community — and when the virus has finally gone away.

The San Francisco Bay Area has seen consecutive weekly declines in the number of new coronavirus cases. Southern California has seen the pace increase.