Americans in their 20s account for 1 in 5 new COVID-19 cases Los Angeles TimesCDC flags 1600 flights where person on board may have had COVID-19 | TheHill The HillBattle rages inside US hospitals over how Covid-19 strikes and kills The GuardianAre asthma patients at greater risk from coronavirus? WPLG Local 10Two New Studies Say You Can Now Get Coronavirus This Way Yahoo LifestyleView Full Coverage on Google News