This sounds like some PC BS to me. If this is true, then why aren’t Black Africans being wiped out by viruses?
This is just another bit of propaganda calculated to convince us that White countries and only White countries being invaded by the third world is a good thing for humanity.
http://www.rense.com/general45/immune.htm
“These factors include resistance to HIV replication within CD4 immune cells as well as a mutation, so far found only among Caucasians, in a receptor on immune cells that may make these cells tougher for the virus to infiltrate.”