Which hereditary form of anaemia largely affects people of sub-Saharan African descent
Sickle cell disease decreasing to 1–2% on the north African coast and <1% in South Africa. There have been studies in Africa that show a significant decrease in infant mortality rate, ages 2–16 months, because of the sickle cell trait. This happened in predominant areas of malarial cases. The number of people with the disease in the United States is approximately 1 in 5,000, mostly affecting Americans of sub-Saharan African descent, according to the National Institutes of Health. In the United States, about one out of 500 African-American children and one in every 36,000 Hispanic-American children have sickle cell anaemia. It is estimated
Sub-Saharan African music traditions to Ancient Egyptian and Biblical Hebrew, have moved in the opposite direction. Further west the Berber music of the Tuareg has penetrated to Sub-Saharan countries. These are included in the Western region, but the music of Sub-Saharan herders and nomads is heard from west to east. These remaining four regions are most associated with Sub-Saharan African music: familiar African musical elements such as the use of cross-beat and vocal harmony may be found all over all four regions, as may be some instruments such as the iron bell. This is largely due to the expansion of the Niger–Congo-speaking people that