A few related points
Factory Farming: Today, units with fewer than 5000 birds are becoming rare, and units with 5000 to 50,000 birds per week cycle have become common. Similarly in layer farms, units with a flock size of 10,000 to 50,000 birds have become common in 2004.
Public Health: Between January 27 and April 18, 2006, outbreaks of HPAI virus subtype HSNI were reported in two districts (Navapur and Jalgaon) of Maharashtra and adjoining areas in Gujarat and Madhya Pradesh.Control measures initiated included culling the entire poultry population, destruction of eggs, feeds, consumables, litter and other potentially infected material in a 10 kilometer radius of the outbreak location, restriction on the movement of poultry, poultry products and personnel to and from the affected areas, and cleaning and sanitation of the infected area. More than one million birds and over 1.5 million eggs were destroyed, and farmers compensated for their losses.
After the first outbreak in two western states, India recorded a multiple of AI in the eastern states like Manipur, Tripura, and West Bengal, during 2007 and 2008. On July 25, 2007, an outbreak was located in small poultry farm in far-east (an east district of Manipur). Within 15 days, 336000 birds were culled, and 28000 eggs destroyed and 131 metric tonnes of poultry meat burned. The strains of H5N1 virus were confirmed in West Bengal during Jan. 2008. It was worst ever in India, covering 14 of its 19 districts. The communist-ruled state briefly contained the outbreak by culling more than 4 million birds.