I haven’t read this info yet, but suppose Person A infects Person B. How long does it take for Person B to become truly infected (that is, from the moment the virus enters his body, to truly taking up host and propagating,) and how long before Person B becomes infectious to other people in his own right?
Source: the Coursera course we took to be contract tracers as need be. (We aren’t doing it but the baseline quantity of people able to was a prerequisite for the state of NY to go to the next reopening phase)
ETA: that’s how long between catching it and developing any symptoms.
There is a TWO DAY WINDOW between the time Person B becomes infectious (which happens FIRST) and the time when Person B gets any SYMPTOMS.
Source, that was what I was told when we were representing repatriated citizens, they had to be detained at least 48 hours after arrival and then tested.
This was back in April and one of the Doctors I dealt with told me he didn’t think asymptomatic transmission was a thing and he doubted many were actually truly asymptomatic. I just politely nodded and rolled my eyes then, turns out he was right.