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The dark days of 2020 are far behind us, but COVID is here to stay. What's the state of the crisis now and where do we go from here?

The dark days of 2020 are far behind us, but COVID is here to stay. What's the state of the crisis now and where do we go from here?

COVID vaccines must work even better, whether by becoming variant-proof, finding other administration routes, or finding different targets to attack. All of these issues – and more -- are under investigation.

More than 3 years into the pandemic, finding out how many Americans have long COVID – and what to about it – has proved to be far harder than identifying those infected with the virus who have recovered or died from it.

The incubation period from infection to symptoms or a first positive COVID-19 test has decreased as the coronavirus has evolved, dropping from 5 days to 3.5 days, according to a new study published in JAMA Network Open.