Listeria

Question 1

Common Characteristics (4)

Answer 1

Gram-positive bacilli

Intracellular parasite

Catalase positive

Tumbling motility in Liquid medium

Question 2

Widespread among?

Answer 2

Animals especially Farm animals and Poultry

Question 3

Pathogenesis (2)

Answer 3

1- Attached and enters mammalian cells by Phagocytosis

2- Membrane-damaging toxin called Listeriolysin

Question 4

Listeriosis (2)

Answer 4

Meningitis

Transmitted from mother to new-born causing meningitis or in-utero causing abortion

Question 5

Treatment (2)

Answer 5

Ampicillin

Trimethoprim-sulfamethoxazole

Question 6

Prevention (2)

Answer 6

No vaccination

Proper food preparation and handling

Question 7

Laboratory Identification (3)

Answer 7

B-haemolysis

Catalase positive

Tumbling motility