http://en.wikipedia.org/wiki/Chickenpox
A person with chickenpox is infectious one to two days before the rash appears.They remain contagious until all lesions have crusted over (this takes approximately six days).
Everyone on the flight who never git it before is at risk and anyone who gets it from him is looking at another 21 + 6 or 8 = 27 to 29 days which takes us into the Penn Relays. Ouch!
A person with chickenpox is infectious one to two days before the rash appears.They remain contagious until all lesions have crusted over (this takes approximately six days).
Everyone on the flight who never git it before is at risk and anyone who gets it from him is looking at another 21 + 6 or 8 = 27 to 29 days which takes us into the Penn Relays. Ouch!