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  2. Sickle cell trait - Wikipedia

    en.wikipedia.org/wiki/Sickle_cell_trait

    The sickle cell trait provides a survival advantage against malaria fatality over people with normal hemoglobin in regions where malaria is endemic. The trait is known to cause significantly fewer deaths due to malaria, especially when Plasmodium falciparum is the causative organism.

  3. Heterozygote advantage - Wikipedia

    en.wikipedia.org/wiki/Heterozygote_advantage

    Sickle-cell anemia (SCA) is a genetic disorder caused by the presence of two incompletely recessive alleles. When a sufferer's red blood cells are exposed to low-oxygen conditions, the cells lose their healthy round shape and become sickle-shaped. This deformation of the cells can cause them to become lodged in capillaries, depriving other ...

  4. Anthony Clifford Allison - Wikipedia

    en.wikipedia.org/wiki/Anthony_Clifford_Allison

    He found that the prevalence of sickle-cell trait (heterozygous condition) among people inhabiting coastal areas was higher than 20%. [8] At the time the highest record was 8% among African-Americans.) [ 10 ] He was posed with the question as to why such a deadly disease (in homozygous condition ) would be more prevalent in a localised area in ...

  5. Hemoglobin C - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_C

    It is possible for a person to have both the gene for hemoglobin S (the form associated with sickle cell anemia) and the gene for hemoglobin C; this state is called hemoglobin SC disease, and is generally more severe than hemoglobin C disease, but milder than sickle cell anemia. [2]

  6. Promising new gene therapies for sickle cell are out of reach ...

    www.aol.com/news/promising-gene-therapies-sickle...

    The price tags for the two sickle cell therapies in the U.S. are $3.1 million and $2.2 million although the cost for gene therapies can vary by country. The process of giving the therapies is just ...

  7. Sub-Saharan Africa - Wikipedia

    en.wikipedia.org/wiki/Sub-Saharan_Africa

    Combined green: Definition of "sub-Saharan Africa" as used in the statistics of United Nations institutions Lighter green: The Sudan, classified as a part of North Africa by the United Nations Statistics Division [2] instead of Eastern Africa, though the organization states that "the assignment of countries or areas to specific groupings is for statistical convenience and does not imply any ...

  8. Fifth disease - Wikipedia

    en.wikipedia.org/wiki/Fifth_disease

    This can cause prolonged anemia in the affected individuals. [60] In people with sickle-cell disease or other forms of chronic hemolytic anemia, a blood disorder, the infection can precipitate an aplastic crisis, wherein the bone marrow of the individual will suddenly stop producing red blood cells. [1] [2]

  9. Iron-deficiency anemia - Wikipedia

    en.wikipedia.org/wiki/Iron-deficiency_anemia

    Iron-deficiency anemia is anemia caused by a lack of iron. [3] Anemia is defined as a decrease in the number of red blood cells or the amount of hemoglobin in the blood. [3] When onset is slow, symptoms are often vague such as feeling tired, weak, short of breath, or having decreased ability to exercise. [1]