Chain of Infection

Question 1

Microorganisms capable of causing disease or illness

Answer 1

Infectious agents

Question 2

Place in which infectious agents live, grow and reproduce

Answer 2

Reservoirs

Question 3

Ways in which infectious agent leaves the reservoir

Answer 3

Portals of exit

Question 4

Ways in which the infectious agent is spread from the reservoir to the susceptible host

Answer 4

Modes of transmission

Question 5

Ways in which the infectious agent enters the susceptible host

Answer 5

Portals of entry

Question 6

Individuals may have traits that affect their susceptibility and severity of disease

Answer 6

Susceptible host

Question 7

Examples of infectious agents

Answer 7

Bacteria, viruses parasites, fungi

Question 8

Examples of reservoirs

Answer 8

People, animals/pets, food, soil, water

Question 9

Examples of portals of exit

Answer 9

Mouth (vomit, saliva), cuts in the skin (blood), during diapering and toileting (stool)

Question 10

Examples of modes of transmission

Answer 10

Physical contact, droplets, airborne

Question 11

Examples of portals of entry

Answer 11

Mucous membrane, respiratory system, digestive system, broken skin

Question 12

Examples of susceptible host

Answer 12

Babies, children, elderly, people with a weakened immune systems, unimmunized people, anyone