Existing Products. As the application of polysaccharide protein conjugate vaccine technology is limited to a subset of bacteria, there are a limited number of polysaccharide protein conjugate vaccines currently in use. Examples of successful polysaccharide protein conjugate vaccines are listed here.
Only seven African countries are not geopolitically a part of Sub-Saharan Africa: Algeria, Egypt, Libya, Morocco, Tunisia, Western Sahara (claimed by Morocco) and Sudan, they form the UN subregion of Northern Africa which also makes up the largest bloc of the Arab World.ub-Saharan Africa is, geographically, the area of the continent of Africa that lies south of the Sahara Desert.
Egypt has a very special environment, which has played a very big part in Egyptian history. Basically Egypt is really part of the Sahara Desert, which runs all across the top of Africa. But the Sahara is a really dry desert, and for the most part people do not live in the desert (though actually the Sahara was not as dry in antiquity as it is now). But even in antiquity it hardly ever rained in Egypt.