9 big questions about Omicron explained
Why is the CDC changing its isolation guidance? Which type of test is best? And how long should you isolate or quarantine? Experts weigh in to help clear confusion.
As scientists learn what makes Omicron different from other versions of the SARS-CoV-2 virus, guidance about how to deal with the variant is changing fast. In the U.S., where Omicron is now the dominant variant, the Centers for Disease Control and Prevention have come under fire for their shifting guidelines, including a recently updated recommendation that halves the isolation period for people who test positive from 10 days to five.
What is the science behind the changing guidance, and how can people best protect themselves as Omicron spreads? Here’s what experts say you need to know.
The short answer? Practicality, says Gregory Poland, a vaccinologist and internal medicine specialist at the Mayo Clinic in Rochester, Minnesota. Because Omicron spreads so