With such concentrations of rats the
probability of the spread of disease is
increased, and where the rats are in
proximity to, and often in direct contact
with, stores of human food, and
where the parasites of rats may be
transferred readily to human beings, the
probability of disease being transmitted
to human beings is correspondingly increased.
An example of this is found
in the records of the State Health Department
of Alabama, which show that
in one city typhus fever was contracted
by 8 employees of one grocery, 7 *of
another, 5 of another, and by 3 employees
of a grain handling company.
In another city in the same state 4
recent cases of typhus were traced to
one general merchandise establishment.