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PCR tests inside vials awaiting testing inside an on-site laboratory for COVID-19 beside the departures hall at Sydney Airport on November 23, 2021 in Sydney, Australia. (James D. Morgan/Getty Images)

Will COVID spike again this fall? 6 tips to help you stay safe

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Diverse group of happy children getting on school bus (Getty Images/FatCamera)

With polio’s return, here’s what back-to-schoolers need to know

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A woman receives her Covid-19 vaccination booster jab at the Sir Ludwig Guttmann Health & Wellbeing Centre on November 10, 2021 in the Stratford area of London, England. (Leon Neal/Getty Images)

Did the U.S. jump the gun with the new omicron-targeted vaccines?

Céline Gounder, Elisabeth Rosenthal