Chain of Infection

Question 1

List the chain of infection

Answer 1

Infectious Agent
Reservoir
Portal of Exit
Mode of transmission
Portal of Entry
Susceptible Host

Question 2

Continual source of the disease-causing organisms

Answer 2

RESERVOIR

Question 3

can be either living/environment that allows pathogen to grow

Answer 3

Rservoir

Question 4

constantly producing/shedding pathogen that can sprean

Answer 4

Reservoir (Human)

Question 5

zoonoses

Answer 5

Reservoir (Animals)

Question 6

SARS, ringworm, leptospirosis

Answer 6

Reservoir (Animals)

Question 7

2 Environmental Reservoir

Answer 7

Soil , Water

Question 8

contains the endospores of clostridium species (tetanus, gas gangrene)

Answer 8

Soil

Question 9

Legionella

Answer 9

Soil

Question 10

can be reservoir for many pathogens found in feces

Answer 10

Water

Question 11

giardiasis, cryptosporidium, leptos, polio, Hepatitis A

Answer 11

Water

Question 12

path by which an infectious microorganism leaves the reservoir

Answer 12

Portal of Exit

Question 13

eliminating / expelling waste water

Answer 13

Excretions

Question 14

produced & discharged from a cell /gland/ organ for a particular function

Answer 14

Secretions

Question 15

propelled out of the mouth/nose when we cough/sneeze or created during medical procedures

Answer 15

Droplets

Question 16

tissues and bodily fluids may also results in transmission of blood borne virus

Answer 16

Blood

Question 17

Main Human portal of exit

Answer 17

Respiratory, Digestive, Reproductive, Urinary, Skin, Blood

Question 18

Three Mode of Transmission

Answer 18

1. Contact Transmission
2. Common Vehicle Transmission
3. Vector Transmission

Question 19

2 types of Contact Transmission

Answer 19

Direct and Indirect

Question 20

close / intimate contact between host and Susceptible Host

Answer 20

Direct Contact

Question 21

transferred from one host via non living object

Answer 21

Indirect Contact

Question 23

constantly producing/shedding pathogen that can spread

Answer 23

Human Reservoir

Question 24

Zoonoses

Answer 24

Reservoir Animals

Question 25

SARS, ringworm, leptospirosis

Answer 25

Animal Reservoir

Question 26

transferred from one host via non living object

Answer 26

Indirect Contact

Question 28

inanimate object that can be the vehicle for transmission of an infectious agent

Answer 28

Fomite

Question 29

Common Vehicle Transmission

Answer 29

Airborne, Waterborne, Foodborne

Question 30

carried in air current for more than 1 metre

Answer 30

Airborne Transmission

Question 31

Rubeola (Measles)
Varicella zoster (chic pox)
Sars Cov2 (COVID 19)

Answer 31

Airborne

Question 32

fecal contamination of water

Answer 32

Waterborne

Question 33

diarrhea
Hepatitis A

Answer 33

Waterborne

Question 34

introduced by poor hygiene, lack of sanitation/ poor food handling

Answer 34

Food borne

Question 35

Salmonella

Answer 35

Foodborne

Question 36

2 Vector Transmission

Answer 36

Mechanical and Biological

Question 37

passive transport of microorganisms on the EXTERIOR of an insects body

Answer 37

Mechanical Transmission

Question 38

insects bites

Answer 38

Biological Transmission

Question 39

path by which an infectious microorganism gains entry to a new host

Answer 39

Portal of Entry

Question 40

young children, elderly, chronically ill

Answer 40

Susceptible Host