@[DrEricDing] 17) “In most buildings, she said, “the air-exchange rate is usually much lower, allowing virus to accumulate in the… https://t.co/0NM3n5Z1XQ (Maurice de Hond)
5 juli 2020 15:22:09
@[DrEricDing] 17) “In most buildings, she said, “the air-exchange rate is usually much lower, allowing virus to accumulate in the… https://t.co/0NM3n5Z1XQ (Maurice de Hond)