"..a meta analysis of 54 studies with 77,758 participants found that for a patient ill with COVID19, there is only an 18% chance they will infect someone at home and 0.7% if they are asymptomatic."
https://nkalex.medium.com/are-geophysic s-dramatically-changing-covid19-outcomes-i n-some-locations-82f8a06ace7b
https://nkalex.medium.com/are-geophysic