New research on HIV transmission among heterosexual couples in Zambia shows that viral fitness is an important basis of a 'genetic bottleneck' imposed every time a new person is infected. The findings define a window of opportunity for drugs or vaccines to prevent or limit infection. HIV represents evolution on overdrive. Every infected individual contains a swarm of viruses that exhibit variability in their RNA sequence, and new mutations are constantly appearing. Yet nearly every time someone ...
New research on HIV transmission among heterosexual couples in Zambia shows that viral fitness is an important basis of a 'genetic bottleneck' imposed every time a new person is infected. The findings define a window of opportunity for drugs or vaccines to prevent or limit infection. HIV represents evolution on overdrive. Every infected individual contains a swarm of viruses that exhibit variability in their RNA sequence, and new mutations are constantly appearing. Yet nearly every time someone ...
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