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Why haven't africans developed resistance to malaria?
They have been getting killed in droves by it for hundreds of thousands of years. you'd think they would have developed some sort of resistance through natural selection. I have heard of this happening to europeans after the bubonic plague and other diseases that they developed immunity to.
3 Answers
- 8 years agoFavorite Answer
Malaria is a protozoa, or a sporozoan if you wish to be more specific. Malaria is not a virus, and it's behavior is generally more complex than that of a virus. Most Africans haven't developed a natural resistance because pathogens like malaria have sneaky tactics to outwit the immune system. Since it infects red blood cells, and the cells incubate the protozoa, it is relatively invisible. It is possible to gain resistance from it should your immune system actually detect it, which is easier said than done.
- eisneunLv 68 years ago
some have developed a resistance, it's called sickle cell anemia.
"Sickle cell anemia is inherited in a simple recessive manner. This means that one must have two copies of the disease-causing version of the sickle cell SNP in order to have the disease. Those who are carriers of a single copy of the disease-causing version do not have sickle cell anemia—but they are resistant to malaria."
- 8 years ago
because, the virus that causes malaria evolves rapidly, thus, when ever the immune eget ready for it, it evolves rapidly. it is like, how do we get the flu each year
