"Roman Bystrianyk" wrote in message
ps.com...
This graph shows the mortality rate from smallpox and scarlet fever
from 1838 to 1922. Several things are of interest in this graph.
First, despite the fact that the smallpox vaccine was introduced in
1798 and very strict vaccination laws were enacted in England,
smallpox epidemics still raged on until the 1880s when all diseases
began their decline. Second, there is a very similar pattern of
epidemics with scarlet fever and smallpox, which suggests a possible
relationship between the two diseases.

George Washington vaccinated his troops. It was done with pus from
humans,
not from cows, which came later.

FYI

What you're referring to is variolation, which is infecting someone
with a weakened smallpox. Vaccination (from the Latin) for cow is
inoculating with cowpox to prevent smallpox.


I also posted the book Pox Americana which described the effect of smallpox
on early America and included a good discussion of variolation. But it had
the same effect as the later cow pox materials...it prevented death.