100% correct 2025
True or False? The presence of an infectious agent is a sufficient cause for
outbreaks of infectious disease to occur. - correct answers False
True or False? Herd immunity must be 100% to confer protection to a group. -
correct answers False
An outbreak of salmonellosis occurred after an epidemiology department
luncheon, which was attended by 485 faculty and staff. Assume everyone ate
the same food items. Sixty-five people had fever and diarrhea, five of these
people were severely affected. Subsequent laboratory tests on everyone who
attended the luncheon revealed an additional 72 cases.The attack rate of
salmonellosis was: - correct answers 28.2%
True or False? The social environment refers to the totality of behavioral,
personality, and cultural characteristics of a group of people. - correct answers
True
Which of the following is characteristic of a single-exposure, common-vehicle
outbreak? - correct answers Explosive
True or False? Physical environmental factors in the natural history of disease
include weather, temperature, and biologic components. - correct answers
False
Epidemic means that - correct answers a disease is present in excess of
normal expectency