Salmonella Flashcards

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1
Q

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

A

See serotyping slide of powerpoint.

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2
Q

Name the top 3 disease causing serovars of <i>Salmonella<i>.</i></i>

A

Typhimurium, Enteriditis, Newport

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3
Q

What is the infectious dose for <i>Salmonella<i>?</i></i>

A

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.

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4
Q

What 2 serotypes of <i>Salmonella<i> have human reserviors?</i></i>

A

Typhi and Paratyphi

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5
Q

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

A

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.

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6
Q

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

A

It is extremely heat tolerant compared to other Salmonella.

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7
Q

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

A

See slide 8 for discussion of this

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8
Q

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

A

See slide 14 for discussion of the PEQAP program?

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9
Q

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

A

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

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10
Q

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

A

Revisit slide 19 for this discussion.

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