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Microbiology · Virology: rabies
Sample itemAfter a bite from a rabid animal, where does rabies virus typically travel before reaching the central nervous system?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Retrograde along peripheral nerves
Rabies replicates locally in muscle and then enters peripheral nerves, travelling retrogradely to the CNS. Prompt wound care plus post-exposure prophylaxis is critical before neural invasion.
Option by option
A. By infecting erythrocytes
Rabies does not use erythrocytes for dissemination.
B. Through portal venous blood to the liver
Hepatic portal spread is not the route to encephalitis.
C. Retrograde along peripheral nerves (correct)
Correct. Retrograde axonal transport explains the variable incubation period.
D. Through lymphatics only
Neural spread, rather than lymphatics alone, is central to pathogenesis.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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