> How does the virus get from their face into the lungs in enough quantity to infect them?
They're already infected. I don't understand the question. Are you asking how the virus replicates? It's a strand of RNA that takes over human cell replication. It binds to ACE2, which is how it targets lungs. https://blogs.plos.org/dnascience/2020/02/20/covid-19-vaccin...
It's unusual for people in public places to be coughed on. I can't think of it happening to me in the past 5 years.
Healthcare professionals wear masks (and goggles, and protective clothing, and sometimes gloves) because their work involves close contact with ill people who are coughing over them.
They touch their mouth, or eyes, or nose.
> How does the virus get from their face into the lungs in enough quantity to infect them?
They're already infected. I don't understand the question. Are you asking how the virus replicates? It's a strand of RNA that takes over human cell replication. It binds to ACE2, which is how it targets lungs. https://blogs.plos.org/dnascience/2020/02/20/covid-19-vaccin...
People touch their face all day everyday, even when they've been told not to. Even when they're telling other people to stop doing it. https://twitter.com/Kojoanan/status/1235275598697771011
It's unusual for people in public places to be coughed on. I can't think of it happening to me in the past 5 years.
Healthcare professionals wear masks (and goggles, and protective clothing, and sometimes gloves) because their work involves close contact with ill people who are coughing over them.