A number of Sub-Saharan African countries have experienced sharp declines in life expectancy since the 1970s.What has been the major cause of that decline?

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The spread of HIV/AIDS has been the major cause of sharp declines in life expectancy in Sub-Saharan African countries since the 1970s. The region has been disproportionately affected by the epidemic, with the highest rates of HIV prevalence in the world. HIV/AIDS has had a major impact on public health, social welfare, and economic development in these countries.

A Number of Sub-Saharan African Countries Have Experienced Sharp Declines