Salmonella Bacteria More Drug-Resistant

The risk of being infected by drug-resistant salmonella bacteria is increasing dramatically, and the continued practice of feeding antibiotics to livestock to speed their growth is exacerbating the problem, researchers say. Caused by eating contaminated food, salmonella poisoning strikes as many as 4 million Americans a year, killing about 500. One strain of the bacteria, known as DT104, is quickly becoming resistant to many antibiotics. A study in the New England Journal of Medicine says laboratories are finding a greatly increased incidence of resistant bacteria in salmonella samples.