According to a recent study, Africans (including blacks) have a genetic predisposition to HIV infection, IIRC, as a result of an ancient suppression towards a particular form of malaria that had stricken the entire continent; HIV takes advantage of this mutation.
they have predisposition to aids, give me a break. it's an STD. you get it from skrewing what does a predisposition to maleria have to do with it. they have apedisposition to skrewing anything that moves and their woman have a predisposition to taking it black or white, aids or not.
Regardless, the evidence does suggest that Europeans (and therefore Americans) have much higher prevalence of resistance to HIV. Immunity to HIV can be bestowed by a mutant variant of the CCR5 gene. This particular variant show varying prevalence in around the world. In Scandanavia it's about 15%, In France, Germany and England it's slighly less. About 10%. In the Middle East and around the Mediterannean it's 5%, more or less. It is completely absent in Asia and Sub-Saharan Africa. Of course, that doesn't mean you get 10% less AIDS patients in France. Potentially, the effect are much more powerful then that. Im sure you've heard of herd mediated immunity. It basically points out that more difficult to maintain a chain of infection when large numbers of a population are immune. With 80%+ immunity a disease will simply not take hold in a community. Obviously 15% does not equal 80%. However it's high enough to make it very hard for a pandemic to take hold.
As for why Europeans have higher immunity rates then Africans, well that's quite interesting. We're (as in scientists) able to track down exactly when this mutant variant of CCR5 was under a strong selection pressure advantage. That was 500-700 years ago, approximately. Intriguingly, that's about the same time Bubonic plague was ravaging Europe. Most accounts suggest bubonic plague started in 1347 in Italy, before burning out in the 1670's. It killed about 25 million, or two third of Europes population. That's what one calls selection pressures. Interestingly, there's also some similiarites between the two viruses. Yersinia pestis (bubonic plague) and HIV attack exactly the same tissue. They both hijack white blood cells sent to attack them, and travel through the body via the lymph node system. It's thought that variant CCR5 makes invasion of white blood cell far more difficult.
whatever, you stick your thing in an aids infested chick, you get aids whats immunity have to do with it.
Doesn't work like that, bub. Female to male transferal rate is close to nil.
That's 'cause it's rasist. It's pretty well known that reality is run by rich white people who hate the poor chocolate people of the world.You learn something every day.
I had no idea there were significant differences in resistance to AIDS among different human ethnicities. Never saw it mentioned here.
NYC hands out about 2 million free condoms a year so the obvious problem is that we are not handing out enough free condoms to people....
Doesn't work like that, bub. Female to male transferal rate is close to nil.
According to a recent study, Africans (including blacks) have a genetic predisposition to HIV infection, IIRC, as a result of an ancient suppression towards a particular form of malaria that had stricken the entire continent; HIV takes advantage of this mutation.
Unfortunately I don't have the link.
I just have to wonder why so many blacks are getting AIDS, moreso than other ethnicities. Is there some kind of genetic predisposition that I am not aware of?
Regardless, the evidence does suggest that Europeans (and therefore Americans) have much higher prevalence of resistance to HIV. Immunity to HIV can be bestowed by a mutant variant of the CCR5 gene. This particular variant show varying prevalence in around the world. In Scandanavia it's about 15%, In France, Germany and England it's slighly less. About 10%. In the Middle East and around the Mediterannean it's 5%, more or less. It is completely absent in Asia and Sub-Saharan Africa. Of course, that doesn't mean you get 10% less AIDS patients in France. Potentially, the effect are much more powerful then that. Im sure you've heard of herd mediated immunity. It basically points out that more difficult to maintain a chain of infection when large numbers of a population are immune. With 80%+ immunity a disease will simply not take hold in a community. Obviously 15% does not equal 80%. However it's high enough to make it very hard for a pandemic to take hold.
As for why Europeans have higher immunity rates then Africans, well that's quite interesting. We're (as in scientists) able to track down exactly when this mutant variant of CCR5 was under a strong selection pressure advantage. That was 500-700 years ago, approximately. Intriguingly, that's about the same time Bubonic plague was ravaging Europe. Most accounts suggest bubonic plague started in 1347 in Italy, before burning out in the 1670's. It killed about 25 million, or two third of Europes population. That's what one calls selection pressures. Interestingly, there's also some similiarites between the two viruses. Yersinia pestis (bubonic plague) and HIV attack exactly the same tissue. They both hijack white blood cells sent to attack them, and travel through the body via the lymph node system. It's thought that variant CCR5 makes invasion of white blood cell far more difficult.
I haven't heard that one. Perhaps your thinking about sickle cell anemia? That's a genetic disease which is prevalent among africans (or those with african descent) because sickle cell trait has an enormous affect in ones resistance to malaria.
Regardless, the evidence does suggest that Europeans (and therefore Americans) have much higher prevalence of resistance to HIV. Immunity to HIV can be bestowed by a mutant variant of the CCR5 gene. This particular variant show varying prevalence in around the world. In Scandanavia it's about 15%, In France, Germany and England it's slighly less. About 10%. In the Middle East and around the Mediterannean it's 5%, more or less. It is completely absent in Asia and Sub-Saharan Africa. Of course, that doesn't mean you get 10% less AIDS patients in France. Potentially, the effect are much more powerful then that. Im sure you've heard of herd mediated immunity. It basically points out that more difficult to maintain a chain of infection when large numbers of a population are immune. With 80%+ immunity a disease will simply not take hold in a community. Obviously 15% does not equal 80%. However it's high enough to make it very hard for a pandemic to take hold.
As for why Europeans have higher immunity rates then Africans, well that's quite interesting. We're (as in scientists) able to track down exactly when this mutant variant of CCR5 was under a strong selection pressure advantage. That was 500-700 years ago, approximately. Intriguingly, that's about the same time Bubonic plague was ravaging Europe. Most accounts suggest bubonic plague started in 1347 in Italy, before burning out in the 1670's. It killed about 25 million, or two third of Europes population. That's what one calls selection pressures. Interestingly, there's also some similiarites between the two viruses. Yersinia pestis (bubonic plague) and HIV attack exactly the same tissue. They both hijack white blood cells sent to attack them, and travel through the body via the lymph node system. It's thought that variant CCR5 makes invasion of white blood cell far more difficult.