VMC-0065
QUESTION
Protective titre for rabies neutralizing antibodies in serum?
OPTIONS
(A) 2.5 IU/ml
(B) 1.0 IU/ml
(C) 2.0 IU/ml
(D) 0.5 IU/ml
ANSWER
(D) 0.5 IU/ml
EXPLANATION
The classical protective threshold for rabies virus neutralizing antibody is 0.5 IU/mL. Therefore option D is correct; 1.0, 2.0, and 2.5 IU/mL are higher values but are not the conventional minimum protective threshold specified here.
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