Mary Mallon, known as "Typhoid Mary," was a typhoid "carrier" who was infected with the typhoid bacillus for a prolonged period of time. She developed neither typhoid fever nor its symptoms; however, other people could, and did, develop this disease after contact with her.
Which of the following is best supported by the statements above?
A. Typhoid fever is not always fatal.
B. Typhoid fever is equally communicable whether the person infected with the typhoid bacillus actually has the disease or not.
C. The absence of the usual symptoms of typhoid fever is not always a reliable indicator that one does not have typhoid fever.
D. Typhoid fever sometimes occurs even when the typhoid bacillus is not present.
E. The typhoid bacillus does not always cause typhoid fever.
Which of the following is best supported by the statements above?
A. Typhoid fever is not always fatal.
B. Typhoid fever is equally communicable whether the person infected with the typhoid bacillus actually has the disease or not.
C. The absence of the usual symptoms of typhoid fever is not always a reliable indicator that one does not have typhoid fever.
D. Typhoid fever sometimes occurs even when the typhoid bacillus is not present.
E. The typhoid bacillus does not always cause typhoid fever.
