Bacteriologic Features of Neisseria Species Midterm Exam Guide
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Questions and Answers

What are the common symptoms of salmonellosis?

  • Fever and abdominal cramping
  • Diarrhea and vomiting
  • Nausea and fatigue
  • All of the above (correct)

How long is the typical incubation period for salmonellosis?

  • 1-3 weeks
  • 1-3 months
  • 1-3 hours
  • 1-3 days (correct)

What is the typical duration of salmonellosis?

  • 48-72 hours (correct)
  • 24-48 hours
  • 12-24 hours
  • 1-2 weeks

How are antibiotics used in the treatment of salmonellosis?

<p>Antibiotics are not needed and may prolong the convalescent carrier state (B)</p> Signup and view all the answers

What is the characteristic rash seen in typhoid fever?

<p>Rose spots (D)</p> Signup and view all the answers

What are the common specimen types used to diagnose typhoid fever?

<p>Blood, bone marrow, urine, and stool (C)</p> Signup and view all the answers

Which of the following best describes the symptoms of Neisseria gonorrhoeae infection in men?

<p>Yellow, purulent urethral discharge and painful urination (C)</p> Signup and view all the answers

What is a common characteristic of Neisseria gonorrhoeae infection in women?

<p>They are more often asymptomatic than men (D)</p> Signup and view all the answers

Which of the following is the diagnostic method for Neisseria gonorrhoeae infection in men?

<p>A smear of urethral exudate showing gram-negative diplococci (B)</p> Signup and view all the answers

Which of the following best describes the presentation of Neisseria gonorrhoeae infection in women?

<p>Greenish-yellow cervical discharge and intermenstrual bleeding (A)</p> Signup and view all the answers

What is the diagnostic method for Neisseria gonorrhoeae infection at sites other than the urethra?

<p>A positive culture is needed (D)</p> Signup and view all the answers

Which of the following is a rare complication of Neisseria gonorrhoeae infection?

<p>Disseminated infection via invasion of the bloodstream (B)</p> Signup and view all the answers

Which of the following statements about Neisseria species is correct?

<p>They are non-motile, piliated, Gram-negative diplococci. (B)</p> Signup and view all the answers

What is the key difference between Neisseria gonorrhoeae and Neisseria meningitidis?

<p>N. gonorrhoeae is encapsulated, while N. meningitidis is unencapsulated. (A)</p> Signup and view all the answers

Which of the following statements about the lipooligosaccharide (LOS) of Neisseria species is correct?

<p>LOS is shorter and more highly branched than typical LPS, with non-repeating O-antigen side chains. (C)</p> Signup and view all the answers

Which of the following proteins are involved in the pathogenesis of Neisseria species?

<p>PorA and PorB porins, and Opacity (Opa) proteins. (D)</p> Signup and view all the answers

Which of the following statements about Acinetobacter baumannii is correct?

<p>It causes nosocomial infections. (D)</p> Signup and view all the answers

What is the significance of the IgA protease expressed by Neisseria species?

<p>It cleaves IgA1, an important component of mucosal immunity. (A)</p> Signup and view all the answers

Which of the following is a potential complication of Neisseria gonorrhoeae infection?

<p>Salpingitis (A)</p> Signup and view all the answers

What percentage of women with salpingitis due to Neisseria gonorrhoeae infection experience infertility?

<p>20% (C)</p> Signup and view all the answers

Which of the following is a risk factor for Neisseria meningitidis infection?

<p>Recent viral or mycoplasma upper respiratory tract infection (D)</p> Signup and view all the answers

How does the outer membrane of Neisseria gonorrhoeae differ from that of Escherichia coli?

<p>Neisseria gonorrhoeae has a shorter, highly branched O-antigen portion of LOS, while E. coli has a heat-stable O-antigen. (D)</p> Signup and view all the answers

Why is it challenging to develop a vaccine for Neisseria gonorrhoeae?

<p>It exhibits antigenic phase variation in surface structures like pili, LOS, and Opa proteins. (A)</p> Signup and view all the answers

Which of the following is a prevention method for Neisseria gonorrhoeae infection?

<p>Barrier methods (A)</p> Signup and view all the answers

Which phase of whooping cough is characterized by paroxysms of cough followed by a "whoop"?

<p>Paroxysmal phase (A)</p> Signup and view all the answers

What is the primary diagnostic specimen for whooping cough?

<p>Nasal swab or nasal saline wash (A)</p> Signup and view all the answers

Which of the following media is used for culturing the causative agent of whooping cough?

<p>Bordet-Gengou or Regan-Lowe media (D)</p> Signup and view all the answers

What is the drug of choice for the treatment of whooping cough?

<p>Erythromycin (C)</p> Signup and view all the answers

Which of the following is a potential complication of whooping cough?

<p>Encephalopathy (D)</p> Signup and view all the answers

What type of vaccine is used for the prevention of whooping cough?

<p>Purified Bordetella proteins in combination with D &amp; T toxoids (D)</p> Signup and view all the answers

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