RT @bopanc: Depressing study about how #COVID19 spreads indoors: A single asymptomatic person - marked A1 on the drawing- is believed to ha… 0 atbildes
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cosmix (2020-04-19 18:04:04) |
RT @bopanc: Depressing study about how #COVID19 spreads indoors: A single asymptomatic person - marked A1 on the drawing- is believed to ha… | |