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Home Q & A Board Biology-Related Homework Help Cell Biology
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Laurenrees98 Laurenrees98
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6 years ago
Influenza pandemics occur cyclically because
A) less than 100% of the population is immunized.
B) new strains emerge due to reassortment between bird, swine, and human variants.
C) the vector is seasonal.
D) there are environmental reservoirs that release the virus during particular seasons.
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SoullessGingerTSoullessGingerT
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6 years ago
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Laurenrees98 Author
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#2
6 years ago
Makes more sense now, have a good weekend!
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