The pandemic isn't over for people over 65.
Several studies have linked infection with memory lapses and trouble concentrating.
The virus is still killing 400 to 500 people a day, and data is sketchy about how to save lives.
Politicians are using science as a cover for poor or uncertain decision making.
Many people won't be able to get tests when they'd do the most good
Americans have too little information on infections among those who've gotten the Covid-19 shot.
Pendulum swinging is all part of a common pattern in health reporting, says Faye Flam.
Some vaccines might be extremely effective but harder to scale; others the opposite.
How the coronavirus spreads in the real world.
The ability to give truly informed consent is the most important factor.
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