In which populations has a genetic defense against HIV infection been observed, and how common is it?

Updated: Mar 05, 2020
  • Author: Delia M Rivera, MD; Chief Editor: Russell W Steele, MD  more...
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Deficiency of CCR5 chemokine co-receptors is present in as many as 10% of Europeans and 20% of Ashkenazi Jews, and it appears to confer some protection against infection. After gp120 binds to the receptors, an associated gp41 transmembrane glycoprotein is inserted into the cell membrane and initiates cell-membrane fusion.

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