Intensification and Disease Spread through Zoonotic

The most rapid changes in pig and poultry farming are expected in Burkina Faso and Ghana in Africa and India, Myanmar and Pakistan in Asia. Pig and poultry farming is also intensifying more rapidly than other farm commodity sectors, with more animals being raised in more concentrated spaces, which raises the risk of disease spread. 

Assessing the likely impacts of livestock intensification on the high-priority zoonoses, the study found that livestock density is associated more with disease "event emergence" than with overall disease burdens. Both the northeastern United States and Western Europe have high densities of livestock and high levels of disease emergence (e.g., BSE, or "mad cow" disease, and Lyme disease), but low numbers of people falling sick and dying from zoonotic diseases. The latter is almost certainly due to the relatively good disease reporting and health care available in these rich countries. 

Bovine tuberculosis is a good example of a zoonotic disease that is now rare in both livestock and human populations in rich countries but continues to plague poor countries, where it infects about seven per cent of cattle, reducing their production by six per cent. Most infected cattle have the bovine form of TB, but both the human and bovine forms of TB can infect cows and people. Results of this study suggest that the burden of zoonotic forms of TB may be underestimated, with bovine TB causing up to 10 per cent of human TB cases. Human TB remains one of the most important and common human diseases in poor countries; in 2010, 12 million people suffered from active disease, with 80 per cent of all new cases occurring in 22 developing countries.

Zoonotic    =   disease can transfer from animal to human exp. TB,Birds flu, swine flu,mad cow ,Antrakh etc