WASHINGTON — U.S. Sens. Dianne Feinstein (D-Calif.), Elizabeth Warren (D-Mass.) and Kirsten Gillibrand (D-N.Y.) have sent a letter to Food & Drug Administration Commissioner Margaret Hamburg requesting information about the FDA's efforts to curb the overuse of antibiotics in food animal production.
"The use of antibiotics in food-producing animals must be reduced as part of the effort to preserve the efficacy of antibiotics," the senators wrote. "Research has shown that antibiotic resistant bacteria are most likely to develop when antibiotics are used continuously at low doses — the type of regimen used frequently in food. . .