Virology — MCQs

A 4-year-old child presented with fatigue, malaise, fever, sore throat, headache, nausea, abdominal pain, and myalgia. On examination, generalized lymphadenopathy and hepatosplenomegaly were noted. There was marked tonsillar enlargement along with palatal petechiae, rashes, and edema of the eyelids. A peripheral smear was performed, and the Paul Bunnel test was positive. All of the following can be caused by the organism responsible for these symptoms, except one?

Which of the following viruses is not a common cause of viral encephalitis?

All of the following are viral inclusion bodies except?

A 40-year-old HIV-seropositive male presents with multiple, multicentric skin lesions and lymphadenitis. What is the most likely cause of this condition?

Over a holiday weekend, more than 100 adults at a resort hotel develop a diarrheal illness marked by voluminous, watery stools more than 10 times per day. They also report headaches, abdominal cramping pain, and myalgias. On physical examination, they have manifestations of dehydration and mild fever. Laboratory studies of stool samples show no increase in leukocytes or fat and no RBCs. Their illness lasts just 1 to 3 days and resolves with no sequelae. Which of the following infectious agents is the most likely cause of their illness?

All of the following are examples of intracytoplasmic inclusion bodies except?

HIV binds to macrophages having which of the following molecules?

An 8-year-old boy presents with behavioral changes, intellectual deterioration, and "laziness." Over several months, he develops increasing clumsiness and periodic, involuntary, jerky movements every 3 to 6 seconds. Visual deterioration is apparent on visual field testing, and optic atrophy is evident on funduscopic examination. Cerebrospinal fluid studies show oligoclonal bands of IgG on electrophoresis but no significant pleocytosis. The electroencephalogram reveals periodic discharges synchronous with the myoclonus. Computed tomography (CT) of the head demonstrates low-density white matter lesions and cerebral atrophy. The boy dies at age 10. Prior infection with which of the following agents was most likely related to this patient's condition?

What is true about prions?

A 30-year-old patient presented with a 10-day history of jaundice. Liver function tests showed a bilirubin of 10 mg/dl, SGOT/SGPT of 1100/1450, and serum alkaline phosphatase of 240 IU. The patient was positive for HBsAg. What is the confirmatory test to establish an acute Hepatitis B infection?