Carmel Wroth

Regular, every-day contact tracing for the coronavirus typically entails a health worker calling up to a dozen or so contacts of the person with the known infection. But what does it look like when you're contact tracing the President of the United States, in the hectic, jam-packed last weeks of a reelection campaign?

As schools across the country grapple with bringing kids back into the classroom, parents — and teachers — are worried about safety. We asked pediatricians, infectious disease specialists and education experts for help evaluating school district plans.

What we learned: There's no such thing as zero risk, but certain practices can lower the risk of an outbreak at school and keep kids, teachers and families safer.

Updated Aug. 12 at 1:15 p.m. ET

How severe is the spread of COVID-19 in your community? If you're confused, you're not alone. Though state and local dashboards provide lots of numbers, from case counts to deaths, it's often unclear how to interpret them — and hard to compare them to other places.

Updated July 4, 2020 at 3:00 p.m. ET

It has been months of quarantine for many of us. The urge to get out and enjoy the summer is real. But given that coronavirus cases continue to surge in many places, what's safe? We asked a panel of infectious disease and public health experts to rate the risk of summer activities, from backyard gatherings to a day at the pool to sharing a vacation house with another household.

The Centers for Disease Control and Prevention intensified its warnings about the risks of vaping, as the number of patients with vaping-related illness continues to climb.

The case count has reached 1,080, the agency announced Thursday. There have been 18 deaths in 15 states, and more deaths are being investigated. All patients reported a history of vaping, and the majority reported using THC-containing products.

Speaking into gusts of wind at the SpaceX launch facility in Cameron County, Texas, on Saturday night, CEO Elon Musk talked up the space travel giant's newest innovation, the SpaceX vehicle Starship.

Musk spoke in front of a 50-meter, 200-ton Starship prototype, calling it "the most inspiring thing that I've ever seen."

He described unique design features of the vehicle and outlined plans to fast-track production of a Starship fleet. His hope, Musk said, is "to reach orbit in less than six months."

President Trump announced Wednesday that the administration will move to force e-cigarette companies to take flavored vaping products off the market, as young people's use of them continues to rise and reports emerge of deaths and illnesses tied to vaping.

"Vaping has become a very big business, as I understand it, but we can't allow people to get sick and allow our youth to be so affected," Trump said.

Updated 6:30 p.m.

The Trump administration has announced an ambitious plan to change treatment for kidney disease in the United States.

President Trump signed an executive order Wednesday directing the Department of Health and Human Services to develop policies addressing three goals: reducing the number of patients developing kidney failure, reducing how many Americans get dialysis treatment at dialysis centers and making more kidneys available for transplant.

Updated 7:55 p.m. ET

The World Health Organization is bringing attention to the problem of work-related stress. The group announced this week that it is updating its definition of burnout in the new version of its handbook of diseases, the International Classification of Diseases — ICD-11 — which will go into effect in January 2022

Updated at 6:01 p.m. ET

The federal Department of Health and Human Services is proposing to roll back an Obama-era policy intended to protect transgender people from discrimination in health care.

"He will not die on your watch."

That's what the family of a patient told Sunita Puri when she was a resident in internal medicine. They were chilling words for the young doctor as she took over the care of a very sick man on the overnight shift.

To Puri, the patient, who had widespread metastatic liver cancer, appeared to be dying. She tried to talk with the family about forgoing heroic measures, to let him have peace in his last hours. But they were adamant.