4 doctors weighed in:

What causes an influenza epidemic?

4 doctors weighed in
Dr. Heidi Fowler
Psychiatry
3 doctors agree

In brief: Epidemic/ pandemic

Per the CDC "An influenza pandemic can occur when a non-human (novel) influenza virus gains the ability for efficient and sustained human-to-human transmission and then spreads globally.
" See: http://www.cdc.gov/flu/pandemic-resources/

In brief: Epidemic/ pandemic

Per the CDC "An influenza pandemic can occur when a non-human (novel) influenza virus gains the ability for efficient and sustained human-to-human transmission and then spreads globally.
" See: http://www.cdc.gov/flu/pandemic-resources/
Dr. Heidi Fowler
Dr. Heidi Fowler
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