VMC-0063
QUESTION
Which one is the mesogenic vaccine strain of New Castle Disease Virus?
OPTIONS
(A) Lasota
(B) R2B
(C) K
(D) F
ANSWER
(B) R2B
EXPLANATION
R2B is a mesogenic live vaccine strain of Newcastle disease virus used in poultry vaccination. Therefore option B is correct; LaSota is generally classified as a lentogenic strain, while K and F are also lentogenic vaccine strains rather than the mesogenic R2B strain.
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