“The hardest part for me was the brain fog, the fatigue.” With few clear answers yet, the future is murky for people who still have lingering symptoms after COVID-19.

THREAD: The @AP is answering commonly asked questions about the coronavirus pandemic in its “Viral Questions” series.

A steady decline in the number of U.S. coronavirus deaths is good news, but experts say it's not time to celebrate because cases are rising as states open up, and more deaths are likely to follow. By @CarlaKJohnson and @nickyaforster apne.ws/lEVNEZm

Researchers are beginning a new study to tell if the blood plasma of COVID-19 survivors might help prevent infection in the first place. Read and watch: apne.ws/lU4bV6K

Monkeys, ferrets and other animals offer needed clues in the global race for a COVID-19 vaccine. Read and watch: apne.ws/QXVRF73

NASA and SpaceX prepare for the first astronaut launch from Florida since the last shuttle flight in 2011. Read and watch: apne.ws/xrCWlvg

NASA and SpaceX prepare for the first astronaut launch from Florida’s Kennedy Space Center since the last shuttle flight in 2011. Read and watch: apne.ws/AGLySIc

NASA astronauts are set to launch from home turf again after a nine-year gap. This time, a private company is running the show. Read and watch: apne.ws/nEnkN01

For the first time in nearly a decade, U.S. astronauts are about to blast into orbit aboard an American rocket from American soil. Read and watch: apne.ws/7sNmC9e

NASA astronaut launches return to Florida next week after nearly a decade gap. Here’s a preview: apne.ws/Kl4feAa

"What Can Be Saved?” — an @AP series spotlighting heroic efforts to heal the planet — is a Webby finalist in the documentary category. WATCH the series: apne.ws/PXXXonH And vote in @TheWebbyAwards People’s Voice: apne.ws/8fYHliH

“What Can Be Saved?,” an @AP environmental series about heroic efforts to heal the planet, is a finalist for a Webby Award for Documentary. WATCH the series: apne.ws/4Cz4vLN And vote in @TheWebbyAwards People’s Voice: apne.ws/4gtrzC8

To watch the “What Can Be Saved?” minidocs: apne.ws/llVPK8N

To watch the “What Can Be Saved?” minidocs: apne.ws/llVPK8N

Apollo 13's astronauts still shun superstition 50 years after their harrowing moonshot. Read and watch: apne.ws/8fXACoG

“Houston, we’ve had a problem.” 50 years ago today, the Apollo 13 mission blasted off for the moon. The rest is history. Read and watch: apne.ws/g1n7waX

A half century after NASA’s most harrowing moonshot, Apollo 13 astronauts Jim Lovell and Fred Haise insist they’re not superstitious. Read and watch: apne.ws/554EwYS

Coronavirus patients are signing up for studies of an experimental drug that’s shown promise against some similar viruses in the past. Read and watch: apne.ws/oJtnV9F

Scientists are hunting for protection against the new coronavirus as the first vaccine study in people gets underway in Seattle. Learn how potential COVID-19 vaccines in development differ from traditional shots: apne.ws/xLgy0gC