Which factor is most likely to have contributed to the high fertility rate in africa A lack of access to food
B Many economic opportunities
C high rate of education
D poor access to medical care

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.