CARRIAGE OF DISEASE 
129 
‘writer was consulted, and advised that Doctor Soper be 
called in to make a thorough investigation. The results 
of Doctor Soper’s search were most interesting. Af¬ 
ter studying every possible source with absolutely nega¬ 
tive results, the proper examinations were begun, and 
it was discovered that Mary, the cook, was a chronic 
carrier. Her past history was looked into, and it was 
found that for several years there had been typhoid 
cases in nearly every family who had engaged her. 
She was immediately isolated, and kept in custody for 
three years. Then she was released, promising never 
again to engage as cook and to report at frequent 
intervals. She returned after four months saying that 
she could get no work and was placed by the New York 
City Department of Health in one of the laundries of 
a public institution, where she still remains. 
Much space was devoted to accounts of this case in 
the daily newspapers and other publications at the time, 
and about that time and subsequently many investi¬ 
gators began to look into the general subject of typhoid 
carriers, with remarkable results. For example, a dairy 
maid was found at Killworth, England, in 1909, 
through the investigations which followed a typhoid 
outbreak. It was discovered that she had had the fever 
in 1903, and that families with whom she subsequently 
lived had typhoid cases. Finally she became attached 
to a dairy which furnished milk to an army post, and 
when the milk was not boiled many cases of typhoid 
resulted. 
In another instance an epidemic of typhoid in the 
