Sx:Incubation period 12-24 h
Si:No fever, no fecal leukocytes present
Rx:Rehydration and supportive care; antibiotics, including ciprofloxacin, rifaximin (Xifaxan) 200 mg tid for 3 days for those aged >12 yr or azithromycin (Zithromax) gm po once or levofloxacin (Levaquin) 500 mg once