COLLEGE PARK, Md. — Poultry farms that have adopted organic practices and ceased using antibiotics have significantly lower levels of drug-resistant enterococci bacteria that can potentially spread to humans, according to a new study led by a researcher in the University of Maryland's School of Public Health. The study, published in Environmental Health Perspectives, is the first to demonstrate lower levels of drug-resistant bacteria on newly organic farms in the U.S. and suggests that removing antibiotic use from large-scale U.S. poultry farms can result in immediate and significant reductions in antibiotic resistance for some bacteria. . .