if I knew I'd tested positive for COVID and had symptoms like that upstairs neighbor certainly did, I'd make sure I knew what the CDC guidelines were and I'd follow them closely...for OTHER's safety...I'm already recovering...my responsibility now is to make sure no one else get's sick.
Those guidelines (attached) include this recommendation...
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For people who test positive, are asymptomatic (never develop symptoms) and not moderately or severely immunocompromised:
Isolation can be discontinued at least 5 days after the first positive viral test (day 0 through day 5, with day 0 being the date their specimen was collected for the positive test).
These people should continue to properly wear a well-fitted MASK around others at home and in public for 5 ADDITIONAL DAYS (day 6 through day 10) after the 5-day isolation period. Day 0 is the date their specimen was collected for the positive test and day 1 is the first full day after the specimen was collected for the positive test. (emphasis mine)
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Mr. 'Upstairs' was only 5 days out from his positive test...frankly, in this highly contagious BA4 and BA5 environment he should always wear a KN95/N95 mask in his apartment elevator.
Always the "Me...Me...Me..."...too many never grow up.
Link: https://www.cdc.gov/coronavirus/2019-ncov/hcp/duration-isolation.html