Are you Immune to HIV?
Where are you parents/ancestors from?
This map came from: http://evolution.berkeley.edu/evosite/relevance/IA2HIV2.shtml
This map shows the percentage of people from each country who are immune to HIV. 13.7% of the population have the gene for immunity to HIV in Sweden, while 5.5 % have this gene in Italy.
If one parent has this CCR5 allele then a person is resistant to HIV, if both parents have the CCR5 gene then the offspring is “immune” to HIV.
Some people would like to know if they are “immune” or partially immune to HIV.
You can get tested to find out if you are immune to HIV at http://www.delta-32.com/
People with two copies of the CCR5 delta32 gene (inherited from both parents) are virtually immune to HIV infection. This occurs in about 1% of Caucasian people.
One copy of CCR5-delta32 seems to give some protection against infection, and makes the disease less severe if infection occurs. This is more common, it is found in up to 20% of Caucasians.
Should everyone be tested for this mutation? Not necessarily. It would be dangerous to assume you are completely safe from infection if you have the CCR5-delta32 mutation.
It’s not an airtight guarantee of never getting AIDS. Some unusual types of HIV can use other proteins for entering cells. Rarely, there have been people who have two mutant CCR5 genes who have died from AIDS.
Also, CCR5 is not the whole story of immunity to HIV infection. Some resistant people have been found who have two perfectly normal copies of CCR5. So other genes also contribute to slowing down HIV infection, and scientists are busy trying to identify them.
The above is from http://brothersgrimmandgorey.blogspot.ca/2010/12/possible-hiv-cure.html