Please select the False statement.
A) A common source epidemic occurs when all of the cases result from exposure to a single source of the infectious agent.
B) A case-control study occurs when all of the cases result from exposure to a single source of the infectious agent.
C) The natural habitat of a pathogen is called the reservoir of infection.
D) Herd immunity can never be overcome by a pathogen.
E) Emerging infectious diseases are those that are novel or have recently increased in incidence.

Question

Please select the False statement.
A) A common source epidemic occurs when all of the cases result from exposure to a single source of the infectious agent.
B) A case-control study occurs when all of the cases result from exposure to a single source of the infectious agent.
C) The natural habitat of a pathogen is called the reservoir of infection.
D) Herd immunity can never be overcome by a pathogen.
E) Emerging infectious diseases are those that are novel or have recently increased in incidence.

Quizplus · Accepted Answer

Herd immunity can be overcome by a pathogen if the pathogen mutates or if the immunity level in the population decreases.

Please Select the False Statement