TY - JOUR AU - R Barwick AU - D Levy AU - G Craun AU - M Beach AU - R Calderon BT - Morbidity and Mortality Weekly Report LA - eng PY - 2000 SE - pp. 1-35 T2 - Morbidity and Mortality Weekly Report TI - Surveillance for waterborne-disease outbreaks, United States, 1997-1998 VL - 49 ER -