Yersinia

• What is the focus of section 34 of the study material?

  Bacteria overview
• Which two bacteria are discussed in this section?

  Yersinia pestis and Yersinia enterocolitica
• What historical event is associated with Yersinia pestis?

  The bubonic plague
• What does the bowl of yerba mate tea symbolize?

  Yersinia pestis
• What does the do not enter sign represent?

  Yersinia enterocolitica
• What type of stain is used to identify Yersinia species?

  Gram stain
• What is the morphology of Yersinia species under the microscope?

  Pink and rod-shaped
• What classification do Yersinia species fall under?

  Gram-negative bacilli
• What does the capsule of Yersinia do?

  Protects from phagocytosis
• What does the red canopy symbolize in the context of Yersinia?

  Facultative intracellular existence
• How is Yersinia pestis transmitted?

  Through rats, prairie dogs, and fleas
• What does the plague doctor mask represent?

  Yersinia pestis causes the bubonic plague
• What are buboes?

  Swollen and painful lymph nodes
• Where are buboes commonly found in the body?

  In the armpits
• What does the yerba mate tea symbolize in relation to Yersinia pestis?

  It indicates the encapsulated nature of Yersinia pestis
• What does Yersinia enterocolitica cause?

  Pseudoappendicitis
• What is the transmission method for Yersinia enterocolitica?

  Contaminated milk and pork
• How does pet feces relate to Yersinia enterocolitica?

  It is a transmission route
• What does the large feather pen symbolize?

  Yersinia enterocolitica causes Reiter syndrome
• What does the vomiting and diarrhea indicate in relation to Yersinia enterocolitica?

  Symptoms of infection
• What type of antibiotics can treat Yersinia species?

  Fluoroquinolones
• What key points help identify Yersinia pestis in a clinical scenario?

  Exposure to a rodent and tender lymphadenopathy
• What does tender lymphadenopathy in the left axilla indicate?

  Presence of a bubo
• Which organism causes buboes?

  Yersinia pestis
• Why is coccidioides immitis not the correct answer for the clinical scenario?

  It does not cause buboes
• Why is Yersinia enterocolitica not the correct answer for the clinical scenario?

  It presents with gastrointestinal problems
• Why is cryptococcus neoformans not the correct answer for the clinical scenario?

  It presents with neurological findings
• Why is blastomyces dermatitis not the correct answer for the clinical scenario?

  It does not cause buboes
• What is the correct answer to the clinical scenario presented?

  Yersinia pestis