While most research focuses on how to kill HIV
, another critical part of the battle is understanding how it works, and why different people are more or less susceptible. A new study
from the NIH finds that an increased number of copies of the gene CCL3L1 makes a person more resistant to HIV than people with fewer copies. They found that African-Americans had an average of four copies whereas European-Americans had an average of 2-3, but apparently not
that European-Americans were more susceptible than African-Americans.
This last bit confuses the hell out of me. I mean, I understand from a statistical perspective how that can happen, but it doesn't make sense
. There should be a protective effect across populations, shouldn't there? Any help from the epidemiology crowd here?