A patient presents with high fever, rash, and neck pain. Lab…
A patient presents with high fever, rash, and neck pain. Lab results show the presence of a Gram-negative diplococcus. The indicated microbe produces an endotoxin that causes internal bleeding (most prominently displayed as small pinpoint hemorrhages); the microbe uses an adhesion mechanism that produces twitching motility, giving the organism the appearance of twitching forward. Based on this information, which of the following adhesion mechanisms is being used by the causative agent?
Read DetailsAn epidemiologist studying diphtheria in Eastern Europe gath…
An epidemiologist studying diphtheria in Eastern Europe gathers information about the total number of active cases in a given area and the number of new cases in that area over a given time. If an epidemic occurs, which of the following would the epidemiologist notice?
Read DetailsThe flu vaccine is typically a cocktail providing protection…
The flu vaccine is typically a cocktail providing protection against several strains of the flu. Which of the following factors related to the flu vaccine may provide some protection against antigenic drift but not antigenic shift?
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