Public Health Microbiology

Question 1

VIO

Answer 1

Veterinary Investigation Officer

Question 2

OCT

Answer 2

Outbreak Control Team

Question 3

CCDC

Answer 3

Consultant in Communicable Disease Control

Question 4

Typical scenario for zoonotic disease

Answer 4

Outbreak investigation initiated by Department of HEalth
VIOs co-opted into OCT
OCT chaired by CCDC (Medic)
VIO tasked with identifying source of infection/ implementing control measures

Question 5

What is a fomite?

Answer 5

Inanimate object that can carry and spread disease and infectious agents

Question 6

Key equipment required to investigate zoonotic disease

Answer 6

Swabs
* Drag swabs
* Boot swabs
* Gauze swabs
Sterile pots
Culture media
Agar plates
PPE
* Masks
* Gloves
* Boots

Question 7

Systemic approach

Answer 7

Act
Plan
Do
Check

Question 8

Act

Answer 8

OCT decided on course of action
Control measures
Public information
Co-ordination
Case review

Question 9

Plan

Answer 9

Describe problem
Focus on questions
Equipment selection
Expertise available
Budget

Question 10

Do

Answer 10

Collect samples
documents and photos
Communication
Precautionary measures

Question 11

Check

Answer 11

Formulate ypothesis
Data supporting
Data undermining
Communication

Question 12

Sample considerations

Answer 12

Faeces, urine, feed, blood, hides, litter
Water, dust, handrails, walkways
Staff, visitors
Farm shop, caterers, milk/meat on site

Question 13

How many samples to take?

Answer 13

100/target prevalence x 3

Question 14

Assumptions in sampling model

Answer 14

• Sampling within the population is random
• Distribution of pathogen in the population is uniform