[smolensk]

Fortunately, smallpox is not contagious until the spreader has already started to breakout himself and also he will be very sick while he is walking all over New York. Now, about the other diseases, I don't know.

[tallhappy]

Fortunately, smallpox is not contagious until the spreader has already started to breakout himself and also he will be very sick

Not true. I have read some article which stated this, but it is not accurate. Infected but symptonless people can spread it.

It is a lot more infectious later, so that may be the reason for this common misperception.