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Food Microbiology > Salmonella > Flashcards

Flashcards in Salmonella Deck (10):
1

How is the serotyping for Salmonella different from that of E.coli, specifically with the H antigen

See serotyping slide of powerpoint.

2

Name the top 3 disease causing serovars of Salmonella.

Typhimurium, Enteriditis, Newport

3

What is the infectious dose for Salmonella?

10^5-10^7 cells generally; although note that some cases of illness, such as the chocolate outbreak we discussed, likely resulted from much lower doses.

4

What 2 serotypes of Salmonella have human reserviors?

Typhi and Paratyphi

5

What policy on testing did the Peanut Corporation of America have that got them into trouble with the FDA?

A "test until negative" policy, where if a sample showed up positive for bacteria they would send out over and over again until it showed up negative. Then they would sell the product.

6

What is the most distinguishing characteristic of Salmonella ser. Senftenberg?

It is extremely heat tolerant compared to other Salmonella.

7

How does water activity affect the heat tolerance of Salmonella (as well as other pathogens?)

See slide 8 for discussion of this

8

What is the PEQAP program, and specifically what is it trying to detect?

See slide 14 for discussion of the PEQAP program?

9

What "groups" can Salmonella be divided up into? How are these categorized?

See slide 6 for group A-G discussion; do you remember what is so particularly important about group D Salmonella?

10

What causes the 1994 Schwan's ice cream outbreak, and the 1985 Jewel pasteurized milk outbreak?

Revisit slide 19 for this discussion.