Symptoms

Kids fight off COVID-19 quickly but don't develop adaptive immunity - UPI.com Children's amped-up immune systems allow them to beat back COVID-19 easily, producing a strong initial response that quickly slaps away the virus. But there might be a price to be paid for that sharp reaction. UPI

Because the initial response provides such a swift takedown, kids' immune systems don't remember the virus and don't adapt to be prepared for future infections, according to scientists with the Garvan Institute of Medical Research in Sydney.

Record number of deaths in US from cardiovascular disease early in pandemic: Report shows New data from the American Heart Association highlights the major impact COVID-19 had on cardiovascular health and death rates during the first year of the pandemic. ABC News ABC News

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Setting the record straight: There is no 'Covid heart' In a world where success is measured by clicks, the idea that even mild cases of Covid-19 could pose a new and unprecedented threat to the heart took off, even though it was largely unsubstantiated. Patrick Skerrett STAT

After a year of frightening headlines, widespread concern, and countless retweets that the virus that causes Covid-19 may attack the heart more aggressively than any other viral illness, the verdict is in: It doesn’t.