QUESTION 6 Which of the following is a characteristic of a single exposure, common source epidemic? O Large number of secondary cases O Increasing severity with decreasing age O Explosive O Cases include both people who have been exposed and people who have not been exposed QUESTION 7 Person X received their COVID-19 shot and experienced severe headache and muscle pain afterwards. Person X contacted the Vaccine Adverse Event Reporting System to report their symptoms. This is an example of: O Active surveillance O Passive surveillance O Syndromic surveillance O All of the above QUESTION 8

A characteristic of a single exposure common source epidemic is that it is explosive in nature because all the cases are exclusive and the present at the same point in time which causes a sudden and rapid increase in the number of cases in the population in addition the cases are limited to people who have been exposed to this common exposure source.

Surveillance is a measure by which we can access data for drug interactions drug side effects and other medical effects, the surveillance can be either  active or passive or syndromic .