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How does swine flu differ from the bird flu?

1 doctor weighed in
Dr. Tony Ho
Internal Medicine - Infectious Disease

In brief: Passage through host

Avian flu normally has to go through swine before it can jump to infect humans.
In 1997, a special type of avian flu was found to have skipped the step in swine, so that they could infect humans directly; luckily, there as no huge pandemic because humans couldn't transmit it to each other.

In brief: Passage through host

Avian flu normally has to go through swine before it can jump to infect humans.
In 1997, a special type of avian flu was found to have skipped the step in swine, so that they could infect humans directly; luckily, there as no huge pandemic because humans couldn't transmit it to each other.
Dr. Tony Ho
Dr. Tony Ho
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