|HIV exposed, but not infected?
Oct 15, 2006
Has it been determined if some people can actually be exposed to the HIV virus and not become infected?
| Response from Dr. Horwath
In order to be infected, certain receptor and coreceptor proteins on immune cells are needed, including one called CCR5. Some people have a genetic variation (known as delta-32 allele) that confers a strong, although not complete, resistance to HIV infection. This genetic variant apparently is not common.
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