I forgot to post questions this week.
4/28- you said one of the requirements for viral entry and infection is there needs to be sufficient amount of virions to interact with the host in order to initiate infection. Would am area where an infected person coughed 30 minutes ago have sufficient amount of virions to infect someone that stepped through the same area?
4/29- what causes shortness of breath in infected patients that don't develop pneumonia?