Reinfection Questions, Plus Trump Is Taking Hydroxychloroquine

Plus: President Trump says he’s been taking hydroxychloroquine

One of the biggest unanswered questions of the Covid-19 pandemic is if reinfection with the disease is possible. Over the weekend, we got two big clues: first, 13 sailors from the USS Theodore Roosevelt tested positive for Covid-19 for the second time after previously testing negative twice for the disease. It’s unclear whether the test results were faulty or if they were quickly reinfected aboard the ship, but the Navy is scrambling to find out. Second, officials from South Korea said that hundreds of patients who retested positive after recovering from Covid-19 were no longer infectious. But the big question still hasn’t been answered yet -- why are all of these people testing positive again in the first place?

Business

Speaking of Moderna: this morning the biotech company revealed new positive data in its coronavirus vaccine clinical trial.

It may seem counterintuitive, but one of the sectors that has been hardest-hit financially from the coronavirus pandemic is healthcare and hospitals.

One way hospitals can get back on track is to be able to accept more non-Covid 19 patients. Here’s how they can do that.

A new survey finds U.S. employers are more concerned about keeping workplaces clean and socially distant than using coronavirus antibody tests to determine when workers can return.

Science & Health

An expert in biodefense breaks down how and why diseases spread and become pandemics.

Not all reproductive services can be delayed during the pandemic; check out which ones you can push back, and which treatments you should still do right away.

Wearing masks to prevent Covid-19 is important for adults, but please don’t put a mask on your baby.

Many people with the coronavirus are asymptomatic, but that doesn’t mean they won’t infect others.

Africa is using lessons the country has learned during its long battle with HIV to fight the coronavirus pandemic. Can the U.S. do the same?

On the Upside

How are you, really?: Due to job losses, illnesses and long periods of isolation, a lot of people are struggling with mental health during the Covid-19 pandemic. This new social media initiative is making sharing feelings easier.