Which aspect of a biological agent is probably the most frightening to those exposed?

Question

Quizplus · Accepted Answer

Virulence refers to the proportion of people with clinical disease who become severely ill or die.It is assumed people could cope with illness but possible death is truly frightening for most.Infectivity refers to the capacity of an agent to enter a susceptible host and produce infection or disease.Invasiveness is the ability of an agent to get into a susceptible host.Pathogenicity measures the proportion of infected people who develop the disease.

Which Aspect of a Biological Agent Is Probably the Most