Characteristics Of Living Agent

Question 1

Ability to invade and multiple (min. number of particles required to produce infection in 50% of hosts of same species)

Answer 1

Infectivity

Question 2

Capacity of agent to induce clinically apparent disease

Answer 2

Pathogenicity

Question 3

Ability of an agent to produce serious illness. Measured by fatality

Answer 3

Virulence

Question 4

Ability of agent to trigger immune response or defense mechanism of host

Answer 4

Immunogenicity

Question 5

Ability to combine specifically with products of immune system

Answer 5

Antigenicity