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There are at least 13 types of animal diseases, which should be responsible for the 2.4 billion cases of human disease and 2.2 million deaths worldwide each year.

Most of the infections and deaths from zoonoses (animal diseases that can be transmitted to humans) occur in poor or middle-income countries. But lately the disease began infecting humans in the United States and Europe, who becomes evil or are developing drug resistance.

“Demand for livestock products rising global mean the problem may become worse. From worm causes cysts to bird flu, zoonoses present a major threat to human and animal health,” said Delia Grace, veterinary epidemiologists and food safety experts the International Livestock Research Institute (ILRI) in Kenya, as reported by Reuters on Friday (06/07/2012).

Studies conducted by ILRI, Institute of Zoology in the UK and the Hanoi School of Public Health in Vietnam, mapping livestock and human diseases acquired from animals, as well as compiling a list of 20 geographic hotspots.

Ethiopia, Nigeria, Tanzania, and India has the highest burden of zoonotic diseases, the spread of disease and death is extensive.

In addition, zoonoses are also found in the United States and Europe, especially in Britain, Brazil and parts of Southeast Asia, which infects humans for the first time, a highly virulent or drug resistant.

One of these diseases are brucellosis, also known as Bang disease or Mediterranean fever, which is a zoonotic disease that is transmitted through unsterilized milk or eating meat from infected animals.

The researchers estimate that about 1 in 8 cattle in poor countries are exposed to brucellosis. In addition to threatening people with the disease, the disease also reduce milk and meat production in cattle about 8 percent.

The study also looked at epidemic zoonosis, which usually occur as outbreaks like anthrax and Rift Valley fever, as well as emerging zoonoses are relatively rare as bird flu. Some, such as HIV / IDS and H1N1 swine flu, has shown the ability to cause a pandemic spread.

While zoonosis can be transmitted to people from wild or domesticated animals, most human infections acquired from the 24 billion farmed animals in the world, including pigs, poultry, cattle, goats, sheep and camels.