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2  · PM2.5 vs. N95. As we now know, N95 is a mask rating. PM2.5 refers to particulate matter or a fancy way of saying pollution particles that are in the air. The 2.5 refers to the size of these particles as being 2.5 microns or smaller. This picture can give you a visual example of how big PM2.5 particles are.

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Other airborne diseases also thrive in conditions of poverty, exploiting enclosed spaces, crowding, and poor hygienic conditions. Tuberculosis (TB), to name just one, killed an estimated 3 million people in 1996, and nearly 7.5 million others developed the disease (I125). TB is the single largest cause of adult death from infectious diseases.

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After collection of data, farmers were divided into three groups based on type of flock i.e. layer farmers, broiler farmers and total farmers for better analysis and presentation of results. About 45.00 per cent, 61.67 per cent and 38.34 per cent of total, layer and broiler farmers, respectively were in medium category of farming experience.

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