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Three questions and the emerging answers about COVID-19 Vaccine protection--NPR

As the COVID-19 vaccine rolls out, three big questions loom. First, can someone who has been vaccinated still spread the disease? Second, will the vaccine remain effective as the virus itself evolves? And third, how long will the vaccine's protection last?

Answers to these questions lie in our immune systems. And the answers aren't straightforward because our immune systems are both remarkably adept and remarkably challenging to predict.

...the first question, about whether people who are vaccinated can still spread the disease. Marion Pepper, an immunologist at the University of Washington, says that's not just an open question for this vaccine, but for vaccines in general.

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A new COVID-19 challenge: Mutations rise along with cases

The race against the virus that causes COVID-19 has taken a new turn: Mutations are rapidly popping up, and the longer it takes to vaccinate people, the more likely it is that a variant that can elude current tests, treatments and vaccines could emerge.

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Israeli hospital: 98% of staff who got 2nd shot have high-level COVID antibodies

A new serological study conducted at Sheba Medical Center in Ramat Gan has shown 98% of hospital workers who received the second dose of the coronavirus vaccine have developed a high level of antibodies to fight off the virus.

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Study: In pandemic era, older adults isolated but resilient

Since the pandemic’s descent, they have generally been viewed as among those at higher risk — older Americans, some of them medically vulnerable, figuring out how to navigate life in a COVID-saturated, increasingly isolated world.

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Study: The Future of the Coronavirus? An Annoying Childhood Infection

As millions are inoculated against the coronavirus, and the pandemic’s end finally seems to glimmer into view, scientists are envisioning what a post-vaccine world might look like — and what they see is comforting.

The coronavirus is here to stay, but once most adults are immune — following natural infection or vaccination — the virus will be no more of a threat than the common cold, according to a study published in the journal Science on Tuesday.

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