A patient is referred to a neurologist because of ataxia. Neurological examination reveals a loss of proprioception and a wide-based, slapping gate Magnetic resonance imaging reveals degeneration of the dorsal columns and dorsal roots of the spinal cord. Which of the following organisms is most likely to have caused this pattern of damage?A. Haemophilus influenzaeB. Herpes simplex IC. Neisseria gonorrhoeaeD. Neisseria meningitidisE. Treponema pallidumAnswer
A 33-year-old woman presents with fever, vomiting, severe irritative voiding symptoms, and pronounced costovertebral angle tenderness. Laboratory evaluation reveals leukocytosis with a left shift; blood cultures indicate bacteremia. Urinalysis shows pyuria, mild hematuria, and gram-negative bacteria. Which of the following drugs would best treat this patient's infection? A. Ampicillin and gentamicin B. Erythromycin C. Gentamicin and vancomycin D. Phenazopyridine and nitrofurantoin E. TetracyclineAnswerTags: MCQ, Infectious diseases, Urinary Tract Infection, UTI
Your community recently experienced an outbreak of infectious diarrheal illness due to the protozoan Cryptosporidium, a chlorine-resistant organism. A reporter from the local newspaper asks you if there are other chlorine-resistant fecal organisms that could contaminate public drinking water.You would tell the reporter that such organisms include:A) Escherichia coli.B) Vibrio cholerae.C) Campylobacter jejuni.D) Giardia lamblia.E) Rotavirus.AnswerTags: MCQ, Infectious Diseases, Disinfection
A worried mother calls to tell you that when she went in to check on her crying 6-month-old infant after his nap she noticed a bat in the room. She contacted animal control and an officer captured the bat. The mother wants to know what to do next.Which one of the following is the best advice?A) Arrange to have the bat tested for rabies; initiate postexposure prophylaxis for the child only if positive.B) Initiate postexposure prophylaxis for the child while testing the bat for rabies; discontinue the shots if negative.C) Initiate postexposure prophylaxis for the child and dispose of the bat.D) Examine the child for bites or scratches; reassure the mother if none is found, and dispose of the bat.E) Tell the mother not to worry because bats do not carry rabies.AnswerTags: MCQ, Infection, Rabies, Prophylaxis
A 4-year-old white male has radiographically proven osteomyelitis following a cat bite to the finger. A Gram stain reveals pleomorphic gram-negative rods.The most likely diagnosis would be:A) Bartonella henselae.B) Francisella tularensis.C) Pasteurella multocida.D) Haemophilus influenzae.E) Bacteroides fragilis.AnswerTags: MCQ, Infectious Disease, Osteomyelitis
Regarding chlamydial Infection all are true Except A. typically causes a vaginitis.B. is symptomatic in the majority of women.C. is the commonest cause of chronic prostatitis.D. if discovered in pregnancy is best left untreated until after delivery.E. urethritis is typically associated with a dysuria combined with a negative midstream urine culture.AnswerTags: MCQ, Infection, STD, Chlamydia
