The Effects of Daptomycin and Cytokines Production in Comparison With Vancomycin

Inclusion Criteria: 1. Eligible patients will be age between 18 and 65 who required hospitalization and parenteral antimicrobial therapy 2. Clinical documentation of cellulitis / erysipela 3. Documentation of a minimal surface area 75 cm2 based on the length and / or width of the redness, swelling and / or induration 4. Documented fever, defined as oral or tympanic temperature greater than or equal to 38 ° C Exclusion Criteria: 1. Infections and other minor addition of erysipelas / cellulitis 2. Any recent use of antibacterial drug therapy (systemic or topical antibacterial drugs within 14 days of enrollment) 3. Patients with clinical conditions that alter the interpretation of the primary outcome as patients with neutropenia or compromised immune function, as HIV infection, autoimmune disorders, use of corticosteroids. 4. Patients with known or suspected osteomyelitis. 5. Patients with suspected or confirmed septic arthritis. 6. Patients with complicated skin infections, such as diabetic foot infections. 7. Chronic use of antipyretic drugs (eg, daily use of naproxen). 8\. Less than 18 years of age. 9. pregnancy 10. Patients with mixed infections of Gram-negative or be deleted since the therapy of gram-negative can influence the levels of cytokines. 11\. Patients with renal clearance \<30 mL / min. 12. Patients who are not susceptible to daptomycin or vancomycin. 13. Allergy to study medication.