21) Which of the following definitions is INCORRECT? A) incidence: number of new
ID: 134576 • Letter: 2
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21) Which of the following definitions is INCORRECT? A) incidence: number of new cases of a disease B) epidemic: a disease that is endemic across the world C) pandemic: a disease that affects a large number of people for a short time worldwide D) sporadic: a disease that affects a population occasionally E) endemic: a disease that is constantly present in a population 22) Focal infections initially start out as A) local infections B) sepsis C) septicemia D) bacteremia E) systemic infections. 23) Koch observed Bacillus anthracis multiplying in the blood of cattle. What is this condition called? A) septicemia B) bacteremia C) local infection D) systemic infection E) focal infection 24) Transmission of malaria to human by mosquitos is an example of A) blood-borne transmission B) mechanical transmission C) biological transmission D) airborne transmission E) indirect transmissionExplanation / Answer
21) The correct option is B. epidemic: a disease that is endemic across the world.
Epidemic is not endemic across the world. An epidemic disease quickly spread amongst as large number of people in a given population, but endemic occurs at a predictable rate in a certain area of the population.
22) The correct option is A. local infections.
Focal infections initially start out as local infections. Focal infections are localized infections, which causes disease elsewhere in the host, but they are fairly infrequent and limited to uncommon diseases.
23) The correct option is A. septicemia.
Septicemia is a systemic infection, which arises from the multiplication of pathogens in the blood. In septicemia condition, Koch observed Bacillus anthracis multiplying in the blood of cattle.
24) The correct option is E. indirect transmission.
In indirect contact, infectious diseases spread indirectly through the air and other mechanisms.
For example: vector-borne disease such as malaria.
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