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why do flu epidemics (and pandemics) tend to occur in ten- to forty-year cycles.?

2007-10-23 14:10:19 · 1 answers · asked by Anonymous in Health ➔ Diseases & Conditions ➔ Infectious Diseases

1 answers

the time it takes for a virus to mutate to where it is easily transmitted between human hosts.

2007-10-23 14:16:08 · answer #1 · answered by essentiallysolo 7 · 1⤊ 0⤋

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