Zoonosis from Milk & Water Flashcards Preview

RUSVM Epidemiology 2016 > Zoonosis from Milk & Water > Flashcards

Flashcards in Zoonosis from Milk & Water Deck (22):
1

How is Mycobacterium bovis transmitted to people?

Aerosol
Ingestion of milk, feces, or lymph node contents
Percutaneous exposure

2

How do you control Mycobacterium bovis?

Eliminate animal reservoir
Milk pasteurization

3

What are the two pathogenic Brucella spp. in people?

Brucella melitensis
Brucella abortus

4

How is Brucella transmitted?

Ingestion
Mucous membranes exposure
percutaneous inoculation

5

How do you control Brucella spp.?

Eliminate the animal reservoir
Monitor Swine at the abattoir
Reduce public exposure: pasteurization of milk and milk based products

6

How is Coxiella burnetii transmitted?

Aersol exposure
Environmental contamination

7

What are the barriers to control of M. bovis, Brucella, and Coxiella?

Wildlife Reservoirs
Compliance of animal workers
Social cost/veterinary infrastructure

8

Why is it hard to control Crypto and Giardia?

Difficult to kill with chlorine
must filter water!

9

What are the two most important Crypto spp.?

C.parvum
C. hominis

10

How does an outbreak of C. parvum occur?

overflow/flooding of animal waste holding ponds or feedlot/dairy pens into surface water

11

What are the clinical signs for Crypto in humans?

Diarrhea

12

What are the clinical signs for Giardia humans?

Chronic greasy foul smelling diarrhea
weight loss

13

How do you prevent Crypto and Giardia infection?

Proper treatment (filter) of drinking water
Wash produce
Reduce exposure to recreational water
NO diapers in swimming pools

14

What organ does Lepto infect?

Kidney

15

How is Lepto transmitted?

Ingestion of water containing Lepto
Mucous membranes or broken skin in contact with water containing Lepto
Contact with animal urine containing Lepto

16

What are the clinical signs of Acute Lepto?

Fever
Depression
Lethargy
Icterus
Headache/malaise/ocular pain
Renal damage

17

What are the clinical signs of Chronic Lepto?

Abortions
Stillbirths
weak offspring
Chronic renal insufficiency

18

How do you control Lepto?

Reduce the Reservoir through Rodent control and treatment with antibiotics and vaccines for animals
Reduce human exposure through clean water and the use of gloves

19

What is the definitive host of trematodes?

vertebrates

20

How do you control Schistosomiasis?

Avoid swimming in freshwater
Treat reservoir hosts
Kill intermediate molluscs

21

Swimmer's Itch

Caused by skin invasion by aquatic stage of bird trematodes

22

How do humans become infected with Fasciola spp?

Eating vegetables contaminated with metecercariae