Evaluation of Ceftaroline Fosamil vs Vancomycin Plus Aztreonam in the Treatment of Patients With Skin Infections.

Inclusion Criteria: * Male or female, aged 18 years or older - Complicated skin and skin structure infection (cSSTI) - Infection of sufficient severity to warrant hospitalization - Infection of sufficient severity such that it is expected to require at least 5 days of intravenous antibiotic therapy. patients must have a positive culture for MRSA that has been obtained from the skin infection site and/or blood samples at any time within the 72hrs before the first dose. Exclusion Criteria: * Received systemic antibacterial drugs for greater than 24 hours within 96 hours prior to first dose of study drug - Uncomplicated skin and skin structure infections, skin infections suspected to be caused by viral or fungal pathogens - Diabetic foot infections, decubitus ulcers, ulcers due to peripheral vascular disease - Infection caused by human or animal bites, sternal wound infections, bone infection or arthritis due to an infection, critical limb ischemia of the affected limb - Chronic liver disease or severe impaired renal function, severe low white blood cell count, burns on greater than 15% of total body surface area, necrotizing skin infection, amputation required of primary site of infection, sustained shock