Lesson 8c: Salmonella serotypes

Question 1

contains more than 2,500 serotypes worldwide, based on a system devised _________ and ___________ in which somatic (O) and flagellar (H) antigens are identified

Answer 1

Salmonella serotypes

Kaufmann and White

Question 2

The majority of salmonellae of veterinary importance belong to?

Answer 2

S. enterica subspecies enterica

Question 3

The subspecies are further qualified by the serotype to give a final designation

Answer 3

S. enterica subspecies enterica serotype Typhimurium

Question 4

used for epidemiological investigation of isolated

Answer 4

Typhimurium and Enteritidis

Question 5

main route of infection in Salmonellosis although it can also occur through the mucosae of the upper respiratory tract and conjunctiva

Answer 5

ingestion

Question 6

infect the ovaries and the organisms can be isolated from eggs

Answer 6

Salmonella Enteritidis

Question 7

including type 1 fimbriae and long polar fimbriae which enables it to adhere to intestinal mucosae (Peyer’s patches or M cells)

Answer 7

Fimbriae

Question 8

that interact with the actin cytoskeleton of the host cell, causing rearrangements which lead to ruffle formation

Answer 8

proteins

Question 9

Salmonellae often localize in the mucosae of the __________, __________, and _________ and in the ________ of infected animals

Answer 9

ileum, caecum and colon and in the mesenteric lymph nodes

Question 10

salmonellae are present in?

Answer 10

gall bladder or mesenteric lymph nodes

Question 11

Clinical disease may develop from subclinical and latent infections if affected animals are stressed, to include other factors like?

Answer 11

✓ number of salmonellae ingested
✓ virulence of the infecting serotype or strain
✓ the susceptibility of the host

Question 12

affect most species of farm animals, irrespective of age

Answer 12

Enteric Salmonellosis

Question 13

can follow acute salmonellosis in pigs, cattle, and horses

Answer 13

Chronic enterocolitis

Question 14

intermittent fever, soft faeces, and gradual weight loss leading to emaciation are common features of this condition

Answer 14

enteric salmonellosis

Question 15

can occur in all age groups but is most common in calves, in neonatal foals and in pigs less than 4 months of age

Answer 15

Septicaemic salmonellosis

Question 16

there is a characteristic bluish discoloration of the ears and snout

Answer 16

Septicaemic salmonella choleraesuis infection

Question 17

Causative agent of Salmonellosis in poultry

Answer 17

Salmonella Pullorum, Salmonella Gallinarum, Salmonella Enteritidis

Question 18

infect the ovaries of hens and can be transmitted through eggs that may pose public health hazard

Answer 18

Salmonellosis in Poultry

Question 19

affects young chicks and turkey poults up to 2-3 weeks of age with high mortality rate

Answer 19

Pullorum disease or Bacillary white diarrhoea (Salmonella Pullorum)

Question 20

cam produce lesions in young chicks and poults similar to those of Pullorum disease

Answer 20

Fowl typhoid

Question 21

Causative agent of Fowl thypoid

Answer 21

Salmonella Gallinarum

Question 22

is a name given to infections of poultry by non-host-adapted salmonellae such as ________ and ___________

Answer 22

Paratyphoid

Salmonella Enteritidis and Salmonella Typhimurium

Question 23

serological test techniques that are important tool for diagnosis value on a herd or flock basis based on the principle that a rising antibody titre using indicative of active infection

Answer 23

ELISA and agglutination

Question 24

is used in epidemiological studies to identify isolates with specific characteristics such multiple resistance to antibiotics and enhanced virulence

Answer 24

Phage Typing

Question 25

exhibits multiple resistance to antibiotics

Answer 25

Salmonella Typhimurium DT
(Definitive type) 104

Question 26

common cause of food poisoning in humans

Answer 26

Salmonella Enteritidis PT
(phage type) 4