California Sen. Dianne Feinstein renewed a decadelong push [on June 17] to phase out the routine use of antibiotics in livestock, hogs and poultry. Government officials have warned that increasing antibiotic resistance in humans poses a serious public health threat. In the United States, the Food and Drug Administration has confirmed that 80 percent of all antibiotics are given to farm animals in low doses intended to stave off disease in large livestock operations. Many of the antibiotics are the same ones used to treat human diseases. Scientists have linked the practice to rising antibiotic resistance in humans, along with the overprescription of antibiotics by doctors. Feinstein's legislation, opposed by the National Pork Producers Council, would phase out the use of antibiotics considered medically important" to humans and require new applications for animal antibiotics to prove that they do not endanger human health. The bill would permit antibiotics to treat sick animals. The California Democrat's bill is an identical version of a House bill, HR965, the Preservation of Antibiotics for Medical Treatment Act, by Rep. Louise Slaughter, D-N.Y., a microbiologist on a crusade to eliminate low-dose antibiotic use in livestock.