Along with the annual fatalities, the report estimated at least 2 million antibiotic-resistant infections occur each year. Frieden said these are "minimal estimates" because they count only microbes that are resistant to multiple antibiotics and include only hospital infections, omitting cases from dialysis centers, nursing homes and other medical settings.
At least 70 percent of all antibiotics in the United States are used to speed growth of farm animals or to prevent diseases among animals raised in feedlots. Routine low doses administered to large numbers of animals provide ideal conditions for microbes to develop resistance.
"Widespread use of antibiotics in agriculture has resulted in increased resistance in infections in humans," Frieden said.