the sanguinary business 175
casualties were lodged with the religious sect of Dunkards in Ephrata,
Pennsylvania. Of 700 soldiers crammed into buildings designed for 400,
over 300 died of typhus by the end of 1777. Of the 1,500 soldiers who
were at Ephrata until June 1778, one-third died.
Smallpox was a great scourge in the seventeenth and eighteenth
centuries, not as dramatic as the plague but consistent. In Europe
it killed 400,000 a year.
33
When it was introduced to the New World
by European colonists, it had a massive impact. For instance, Mexico
lost half its population—3.5 million—in the six months after Cortés
landed. By the early eighteenth century inoculation (the introduction
of a small amount of the pus from a recovering victim through a cut in
the skin) was known to give lifelong protection, although the practice
was still viewed with misgiving. In 1776 the American army of the
Canadian expeditionary force had been devastated: “ten times more
terrible than Britons, Canadians, and Indians together,” pronounced
John Adams. Some men inoculated themselves by introducing pus
under their fingernails, but because it was not done under controlled
conditions of isolation, it posed a grave threat to men who had not
previously been infected. Their commander, General John Thomas,
forbade inoculation. Ironically, Thomas, a doctor, died of the disease
shortly after. His successor, John Sullivan, had 2,000 out of his 8,000
command incapacitated by smallpox. The British had been badly hit by
it during their incarceration in Boston, and Washington was concerned
to prevent the disease from spreading to his own army. In January 1777
he decided to attack the problem systematically and ordered William
Shippen to undertake inoculation of every soldier who had not already
had the disease: “Necessity not only authorizes but seems to require the
measure, for should the disorder infect the Army, in the natural way
[which resulted in a 16 percent death rate compared to 0.33 percent for
inoculation] and rage with its usual Virulence, we should have more to
dread from it, than the Sword of the Enemy.”
34
It would save his army.
Previously, patients underwent two weeks of preparation for
inoculation, during which time they were put on a light diet, dosed with
mercury, bled, and purged. The skin (usually of the leg) was punctured
and the virus introduced. Washington’s army could not afford the