Question

question 48 (1 point)
the prodromal period of disease is when:
the infection has ended
the pathogen is dormant
the first mild symptoms appear
symptoms are most severe
question 49 (1 point)
a biological vector differs from a mechanical vector because:
it carries the pathogen externally
it is not alive
it cannot transmit disease
the pathogen has a life stage inside it

Explanation:

Question 48

The prodromal period is the phase in the course of a disease when the first mild symptoms appear. It occurs after the incubation period (when the pathogen is dormant and multiplying) and before the acute phase (when symptoms are most severe). The infection ending is the convalescent period.

A biological vector harbors the pathogen and the pathogen undergoes a life - cycle stage within it. A mechanical vector carries the pathogen externally (e.g., on its body parts) and is not involved in the pathogen's life cycle. Both are alive (as vectors are living organisms like insects) and can transmit disease.

Answer:

The first mild symptoms appear

Question 49