Which or tile following is true about antigenic drift?
Correct Answer: It mostly affects the matrix protein
Description: Ans: D. It mostly affects the matrix protein(Ref: Park 24/e p164, 23/e p154, 22/e p145)Antigenic drift:Mechanism for variation in viruses that involves the accumulation of mutations within genes that code for antibody binding sites.Results from genetic recombination of human with animal or an virus, providing a major antigenic change.This can cause a major epidemic or pandemic involving most or all age groups.Antigenic drift involves point mutation in the genes owing to selection pressure by immunity in the host population.This results in a new strain of virus paicles, which cannot be inhibited as effectively by the antibodies that were originally targeted against previous strains, making it easier for the virus to spread throughout a paially immune population, responsible for seasonal epidemics of influenza.
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now