| climate and on-farm risk factors associated with giardia duodenalis cysts in storm runoff from california coastal dairies. | climatic factors and on-farm management practices were evaluated for their association with the concentrations (cyst/liter) and instantaneous loads (cysts/second) of giardia duodenalis in storm-based runoff from dairy lots and other high-cattle-use areas on five coastal california farms over two storm seasons. direct fluorescent antibody analysis was used to quantitate cysts in 350 storm runoff samples. g. duodenalis was detected on all five dairy farms, with fluxes of 1 to 14,000 cysts/liter ob ... | 2007 | 17873066 |