Comments:African HIV prevalence may also be physiological

Logical fallacy: correlation is not causation. Just because 2 things happen to occur at the same time (lack of Duffy gene; prevalence of HIV) it does not mean that one causes the other--especially since &quot;the study [...] does not identify why the absence of the chemokine receptor in red blood cells increases susceptibility to HIV&quot;.

Shae (talk) 08:36, 25 July 2008 (UTC)