• Clinical cure at 7 days [ Time Frame: 7 days ] [ Designated as safety issue: No ]
  

• Area of erythema (Days 0, 1, 2, 3, 4, 5, 6, 7), days of treatment, side-effects of medication, cost of treatment, patient satisfaction, relapse at 14 days [ Time Frame: 7 days ] [ Designated as safety issue: No ]
  

Drug: Cefazolin and Moxifloxacin
See Detailed Description.

Extended description of the protocol, including information not already contained in other fields.

Objective: To compare 400 mg of oral moxifloxacin (Oral Group) once daily to 2 grams of IV cefazolin and 1 gram of oral probenecid once daily (IV group) for the treatment of moderate cellulitis.

Patients: Any patient presenting to the emergency department at St Paul's Hospital in Vancouver with a diagnosis of cellulitis requiring IV antibiotics, without contraindications to any of the study treatments, and not requiring hospital admission.

Assessments: Daily assessments are performed double-blind at 0, 1, 2, 3, 4, 5, 6, 7 and 14 days.

Primary outcome: Clinical cure at 7 days (resolution of symptoms, no change in antibiotic, no adverse events requiring discontinuation of study drug, no admission to hospital).

Secondary outcomes: Area of erythema, days of treatment, side-effects of medication, cost of treatment, patient satisfaction, relapse at 14 days.

Sample size: Based on equivalence of treatments a total of 390 patients are required (195/group).