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Questions and Answers
What is the primary mode of transmission for Yersinia enterocolitica?
Which of the following is a common symptom of Yersinia enterocolitica infection?
What is the characteristic staining pattern observed in Yersinia enterocolitica?
Which of the following is a common symptom of Yersinia pestis infection?
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What is the primary reservoir and mode of transmission for Yersinia pestis?
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How does Yersinia enterocolitica evade the immune system?
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Which of the following statements regarding Yersinia enterocolitica is NOT true?
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What is the primary virulence factor associated with Yersinia enterocolitica?
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Which of the following is NOT a common symptom associated with Yersinia enterocolitica infection?
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What is the primary reservoir and mode of transmission for Yersinia pestis?
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Which of the following is a characteristic clinical manifestation of Yersinia pestis infection?
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Which of the following statements about the transmission of Yersinia enterocolitica is NOT true?
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Study Notes
Yersinia Enterocolitica
- Gram-negative bacteria with a red hue
- Also known as enterocholitica due to its association with the English terrier
- Transmission occurs through zoonotic means, such as:
- Puppy feces
- Contaminated milk products
- Children are the most common individuals infected
- Resistant to cold temperatures, similar to listeria
- Exhibits bipolar "safety pin" staining, with heavy staining on two ends
- Pathogenesis involves an encapsulated virulence factor
- Diseases caused by Yersinia enterocolitica include:
- Bloody diarrhea
- Invasive systemic effects:
- Fever
- Intestinal issues
- Leukocytosis
- Abscesses
- Major bowel issues
- Necrotic bowel
- Pseudoappendicitis, which mimics appendicitis with symptoms such as:
- RLQ pain
- Fever
- Elevated white count
Yersinia Pestis
- Reservoir and transmission occur through zoonotic means, involving:
- Rodents (usually rats or prairie dogs in the US) as the primary host
- Fleas as vectors that bite humans
- Forms buboes with swollen tender lymph nodes
- Transmitted through human as incidental host, usually with rodents or prairie dogs in the US
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Description
Test your knowledge about Yersinia enterocolitica and pestis through this quiz. Learn about the characteristics, transmission, and staining properties of these bacteria.
