Because of the backwardness of Africa's medical conditions and Africa's tropical environment is very suitable for the breeding of viruses, these viruses through the animal spread on a large scale , but also because of Africa's relatively backward region, so the medical facilities are simple, backward education of doctors, resulting in today's Africa all kinds of diseases and viruses spread.
We all know that there are a lot of wild animals in Africa, and these animals are very good hosts for those viruses, thus becoming able to harm human beings. Diseases and in fact most of the viruses that have ravaged the African continent were originally from animals, but have mutated and spread to human populations. Africa is a "highland continent" dominated by high plateaus. Africa has a high consumption of bushmeat, which is the meat of undomesticated mammals, reptiles, amphibians and birds that is often hunted for food in tropical forests. The capture and trade of bushmeat not only poses a threat to biodiversity, but also provides a pathway for the transmission of a number of serious tropical diseases from animal hosts to humans, such as HIV and Ebola.
Furthermore, the low level of medical care in general, due to Africa's economic backwardness, especially in some remote areas of Africa, and its weak medical awareness. After the injury, there is no intention to dress and disinfect the wound, and the wound is exposed recklessly, which may also lead to inadvertent cross-infection. The sanitary conditions and facilities are also very poor. There is no clean water and no water purifiers, so they can only quote directly from the river, which is not known to be contaminated.
Thus, those most powerful viruses come from Africa is justified, after all, through the Africa regardless of the economic conditions or living environment is less than ideal, which has become the natural cradle of the virus and development, and can only rely on the improvement of the medical level to suspend the status of the virus in Africa.