Biology, 30.07.2021 02:30, kikidsgn123

Influenza type A viruses usually produce a mild, self-limiting febrile illness. However, worldwide epidemics of severe respiratory disease occur periodically. Which of the following is the most important factor in the sporadic development of these epidemics? a. Antigenic drift
b. Antibody associated enhancement
c. Genetic complementation
d. Conjugation
e. Antigenic shift

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Influenza type A viruses usually produce a mild, self-limiting febrile illness. However, worldwide e...