Safety and Efficacy of Prulifloxacin Versus Placebo in Traveler's Diarrhea

Inclusion Criteria: * Diagnosis of Acute Bacterial Gastroenteritis; * Traveler from Industrialized Country; * Capable of giving Informed Consent Exclusion Criteria: * Fever (\>100.3 degrees); * Pregnant or Breast Feeding or Not using adequate birth control; * Known or Suspected (co-)Infection with non-bacterial pathogen; * Symptoms of Gastroenteritis of \>72 hours; * Bloody Diarrhea; * Concomitant antibacterial with activity against enteric bacterial pathogens; * History of IBD; * Unable/Unwilling to comply with study protocol; * \> 2 doses of anti-diarrheal medication within 24 hours; * Antimicrobial Treatment within 30 days