Zoonosis presentation completed in Public Health rotation

1. LISTERIA EDITION
Rachel, Nick, Lianna

2. How to Play
• You will be split into two teams competing
for excellent evaluations in public health
and the glory of becoming a Listeria
champion.
• There will be 4 categories to choose from.
In each category there are 4 questions of
increasing difficulty and value.
• If you get a question wrong then the value
of that question will be deducted from
your overall score
• May the odds be ever in your favour…

3. £200
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£200
£400
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£1000 £1000
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£200
£600
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£1000
Zoonosis
Treatment
/Control
Epidemiology Pathophysiology

4. Most human cases of
listeriosis are acquired by:
A. Contact with soil, water, or hay containing Listeria
monocytogenes.
B. Faecal contamination from an infected person,
particularly pregnant women and
immunosuppressed people.
C. Consumption of contaminated food, like
unpasteurized milk, soft cheeses, cantaloupe, or
ready-to-eat meat.
D. Rarely do we know how human listeriosis is
acquired.

5. Which two groups of people are at
risk of severe listeriosis infection
and will require treatment?
A. Farmers and meat processing workers.
B. Pregnant women and immunosuppressed people.
C. People with MRSA and people that have had many
courses of antibiotics for other conditions.
D. People without working refrigerators and people
who leave their food out for days at a time before
eating it.

6. Which of the following is true?
A. About 1 in 20 people may be carriers of
listeria, yet exhibit no clinical signs. Their faeces
can spread the disease.
B. After infection with Listeria monocytogenes, all
individuals should be treated even if disease is mild
and transient.
C. Cattle that are Listeria antibody positive should be
treated with a course of penicillin.
D. Listeria is not a cause of abortion in either cattle or
humans.

7. The incubation period for
listeriosis in people is:
A. Instant diarrhoea
B. 0 to 12 hours
C. 12 hours to 48 hours
D. 3 to 70 days

8. Experts recommend that a person who
has eaten food contaminated with
Listeria but showing no symptoms should
be treated with:
A. Antibiotics
B. NSAIDs
C. Hospitalised with IV fluids and IV antibiotics
D. Nothing

9. The majority of people will clear
a listeria infection within:
A. 7 days
B. 3 weeks
C. 2 months
D. 3 days

10. The initial choice of antibiotics
is usually:
A. Ofloxacin
B. Cefalexin
C. Ampicillin
D. Gentamicin

11. Which of these is not a method of
controlling listeria infection:
A. Consume perishable foods as soon as
possible
B. Keep raw meat separate from vegetables and
cooked foods
C. Only drink unpasteurised milk
D. Thoroughly cook raw foods from animal sources

12. When and where was the first
documented outbreak of food-
borne listeriosis?
A. Canada, 1970
B. Boston, 1979
C. Liverpool, 1976
D. China, 1972

13. When and where was the first outbreak
of listeriosis confirming an indirect
transmission from animals to humans?
A. India, 1971
B. Canada, 1983
C. Australia, 1991
D. California, 1968

14. In the US between 2014 and 2015, how many
major outbreaks of listeriosis were identified
by the Centers for Disease Control (CDC)?
A. 6 major outbreaks, about 20% of those who
were hospitalized died.
B. 1 major outbreak, less than 5% of those who were
hospitalized died
C. 5 major outbreaks, greater than 80% of those who
were hospitalized died
D. 25 major outbreaks, about 25% of those who were
hospitalized died

15. In the last decade, what is the average
number of cases diagnosed annually of
Listeria food poisoning in the UK?
A. 200-250
B. 1000-2000
C. 3000
D. 50-100

16. What is the cause of
listeriosis?
A. Gram-positive, facultative anaerobic, motile,
rod-shaped bacterium
B. Gram-negative, aerobic, motile, rod-shaped
bacterium
C. Gram-positive, aerobic, non-motile, round bacterium
D. Gram-negative, anaerobic, non-motile, round
bacterium

17. What does listeriosis cause in
sheep?
A. Lameness
B. Diarrhoea
C. Conjunctivitis
D. Bloat

18. What are the natural reservoirs
of L. monocytogenes?
A. Respiratory tract and soil
B. GI tract and soil
C. Oro-nasal cavity and water
D. Respiratory tract and water

19. Which one of the following
clinical syndromes is not usually
caused by Listeria in animals?
A. Encephalitis
B. Abortion
C. Septicaemia
D. Anaemia