3 ms·

Do we have any evidence someone's been infected from a momentary passing in open air? People will say it's science based I guess, but what they mean is well-me

• mlyle 6y ago
  > Do we have any evidence someone's been infected from a momentary passing in open air? We don't have the specific history of >99.9% of infections, so, of course we don't have great evidence for any scenario. Therefore I guess it's presumed safe, just like licking doorknobs? :P Many of the construction site and agricultural site transmissions took place outdoors, without close contact. Yes, outdoor is much, much, much lower risk than indoor contact-- about a 20x odds ratio. Something I tell all my students in our shop class-- PPE is useless if you have to give a lot of thought about when to employ it. Yes, everything happening in the lab right now might seem like it doesn't require safety glasses... but you might not be assessing the risk properly, you might not know everyone else's activities, and you're only ever as safe as the riskiest thing someone else is doing in the room. The cost of masking up for most activities is low, and the cost of partial knowledge or a miscalculation could be very, very high.