Gram-Positive Bacilli
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Questions and Answers

Which species of Gram positive bacilli is motile?

  • B.anthracis (correct)
  • B.subtilis
  • B.cereus
  • All species are motile

    • Which of the following is NOT a characteristic used to classify Gram positive bacilli?

  • Spore formation and Catalase production
  • Cell morphology and arrangement
  • Atmospheric needs
  • All of above (correct)

    • What type of colonies does B.anthracis produce on blood agar?

  • Beta-hemolytic colonies
  • Non-hemolytic colonies (correct)
  • Alpha-hemolytic colonies
  • Gamma-hemolytic colonies

    • Which type of anthrax is caused by inhalation of spores?

    <p>Pulmonary anthrax</p> Signup and view all the answers

    What is the cardinal feature of cutaneous anthrax?

    <p>Painless swelling</p> Signup and view all the answers

    Which of the following is the most effective decontamination solution for spills involving material suspected to be contaminated with B. anthracis?

    <p>0.5% hypochlorite solution</p> Signup and view all the answers

    Which of the following stains is NOT used for the laboratory diagnosis of anthrax?

    <p>Not of above</p> Signup and view all the answers

    Which of the following is the correct treatment regimen for cutaneous anthrax?

    <p>Ciprofloxacin 500mg BD for 7 days</p> Signup and view all the answers

    Which of the following vaccines is effective in animals?

    <p>Sterne's</p> Signup and view all the answers

    Which of the following is the correct minimum infective dose for inhalational anthrax?

    <p>8,000-10,000</p> Signup and view all the answers

    Which of the following is NOT a characteristic used to classify Gram positive bacilli?

    <p>Cell morphology and arrangement</p> Signup and view all the answers

    Which of the following is the correct habitat for Bacillus species?

    <p>Saprophytes</p> Signup and view all the answers

    Which of the following is the correct mode of transmission for cutaneous anthrax?

    <p>Contact with spores or spore contaminated materials</p> Signup and view all the answers

    Which of the following is the correct incubation period for cutaneous anthrax?

    <p>1-7 days</p> Signup and view all the answers

    Which of the following is the correct clinical feature of cutaneous anthrax?

    <p>Painless swelling</p> Signup and view all the answers

    Which of the following is the correct method for handling laboratory specimens suspected to be contaminated with B. anthracis?

    <p>Perform lab tests in a Class II Biological Safety Cabinet</p> Signup and view all the answers

    Which of the following is the correct decontamination solution for spills involving fresh clinical samples contaminated with B. anthracis?

    <p>0.5% hypochlorite solution</p> Signup and view all the answers

    Which of the following is the correct treatment regimen for inhalational anthrax?

    <p>Ciprofloxacin 500mg BD for 60 days</p> Signup and view all the answers

    Which of the following is the correct vaccine for high-risk individuals against anthrax?

    <p>Michigan AVA (BioportR) vaccine</p> Signup and view all the answers

    Which of the following is the correct method for decontamination of spills involving lab samples contaminated with B. anthracis?

    <p>Gently cover spill and soak for one hour</p> Signup and view all the answers

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