‘Imagination as urgent tactical concern.’ –Malcolm Harris
One thing I’ve learned in the five years I’ve spent studying viruses is that these little things are genetic brewing machines. They can carry genetic material from different organisms, they can integrate in the host’s genome, they can transport genetic material from one organism to another. The viral genome of a flu virus in particular is split in different portions called segments. Now suppose an avian flu virus and a swine flu virus infect the same hosts, and two viral particles coinfect the same cell inside the host. Yes, you’ve guessed it: the genetic segments from the two distinct viruses can indeed “reshuffle” and create a completely new virus. In the case of H1N1, this pattern of coinfection and “reshuffling” (called segment reassortment) happened more than once and across three different hosts: birds, pigs, and humans.
