Skip to Main Content

++

Chapter 27: Chlamydia spp.

++
++
++

Which of the following statements about chlamydial antigens is correct?

++
++
++

(A) Chlamydiae have shared group or genus-specific antigens.

++
++

(B) There is no cross-reaction between Chlamydia trachomatis and Chlamydia pneumoniae antigens.

++
++

(C) All five serovars of Chlamydia pneumoniae cross-react with Chlamydia psittaci.

++
++

(D) One serovar of Chlamydia trachomatis causes eye infections, and the second serovar causes genital infections.

++
++
++

The following are part of the control of Chlamydia psittaci and psittacosis in birds except

++
++
++

(A) Quarantine of psittacine birds imported into the United States

++
++

(B) Only allowing sale of psittacine birds hatched in the United States

++
++

(C) Testing of birds for C psittaci infection

++
++

(D) Controlling the shipment of psittacine birds

++
++

(E) Putting tetracycline in the feed of psittacine birds

++
++
++

All of the following statements about perinatal Chlamydia trachomatis infections are correct except

++
++
++

(A) Between 15% and 40% of infants born to infected women develop inclusion conjunctivitis.

++
++

(B) Between 10% and 20% of infants born to infected women develop infant pneumonia.

++
++

(C) The incubation period for Chlamydia trachomatis inclusion conjunctivitis is 1–2 days.

++
++

(D) The incubation period for infant pneumonia is typically 2–12 weeks.

++
++

(E) Ocular prophylaxis with erythromycin or tetracycline for neonatal Neisseria gonorrhoeae infection is generally not effective against neonatal Chlamydia trachomatis infection.

++
++

(F) Infant pneumonia caused by Chlamydia trachomatis often presents with a staccato cough.

++
++
++

An adolescent girl came to the clinic because of a new and unusual vaginal discharge. She had recently become sexually active and had two new partners during the previous month. On pelvic examination, a purulent discharge was seen at the opening of her endocervical canal. Which of the following statements about this patient is most correct?

++
++
++

(A) A serologic test for syphilis is not indicated because her symptoms are not those of syphilis.

++
++

(B) A Gram stain of her endocervical specimen would show Chlamydia trachomatis inside polymorphonuclear cells.

++
++

(C) The differential diagnosis includes infection with Neisseria gonorrhoeae, Chlamydia trachomatis, or both.

++
++

(D) The endocervical specimen should be analyzed for herpes simplex.

+...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.