First U.S. case of COVID-19 reinfection

Nevada health officials say the u-s appears to have its first case of a COVID-19 re-infection.

CASE OF A COVID-19 RE-INFECTION.A 25-YEAR-OLD MAN THERE GOT SICKIN APRIL.THEN, HE RECOVERED ... ANDTESTED NEGATIVE TWICE.IN LATE MAY, HE EXPERIENCEDSYMPTOMS AGAIN AND TESTEDPOSITIVE.NEVADA'S PUBLIC HEALTHLABORATORY SAYS GENETIC TESTSINDICATE ... HE CAUGHT TWODIFFERENT VARIETIES OF THEVIRUS.THE DIRECTOR OF NPHSAYS...."AFTER ONE RECOVERSFROM COVID-19, WE STILL DO NOTKNOW HOW MUCH IMMUNITY IS BUILTUP, HOW LONG IT MAY LAST, OR HOWWELL ANTIBODIES PLAYA ROLE IN PROTECTION AGAINST AREINFECTION."COMING UP ON 23ABC -ATTEND A HEALTH W