• Male or female patients birth to 17 years (inclusive)

• A clinical picture compatible with Acute Bacterial Skin and Skin Structure Infections (ABSSSI) suspected or confirmed to be caused by Gram-positive bacteria, including Methicillin-resistant Staphylococcus aureus (MRSA).

• In addition to local signs of ABSSSI, the patient has at least one of the following:

• Fever, defined as body temperature ≥ 38.4°C (101.2°F) taken orally, ≥ 38.7°C (101.6°F) tympanically, or ≥ 39°C (102.2°F) rectally (core temperature) OR

• Leukocytosis (WBC \> 10,000 mm3) or leukopenia (WBC \< 2,000 mm3) or left shift of \>10% band neutrophils

• Infection either involving deeper soft tissue or requiring significant surgical intervention

• Major cutaneous abscess characterized as a collection of pus within the dermis or deeper that is accompanied by erythema, edema and/or induration which i. requires surgical incision and drainage, and ii. is associated with cellulitis such that the total affected area involves at least 35 cm2 of erythema, or total affected area of erythema is at least BSA (m2) x 43.0 (cm2/m2), OR iii. alternatively, involves the central face and is associated with an area of erythema of at least 15 cm2 b. Surgical site or traumatic wound infection characterized by purulent drainage with surrounding erythema, edema and/or induration which occurred within 30 days after the trauma or surgery and is associated with cellulitis such that: i. the total affected area involves at least 35 cm2 of erythema, or total affected area of erythema is at least BSA (m2) x 43.0 (cm2/m2), OR ii. alternatively, involves the central face and is associated with an affected area of at least 15 cm2 c. Cellulitis, defined as a diffuse skin infection characterized by spreading areas of erythema, edema and/or induration and: i. is associated with erythema that involves at least 35 cm2 of surface area, or surface area of erythema is at least BSA (m2) x 43.0 (cm2/m2), OR ii. alternatively, cellulitis of the central face that is associated with an affected area of at least 15 cm2 5. In addition to the requirement for erythema, all patients are required to have at least two (2) of the following signs of ABSSSI: a. Purulent drainage/discharge b. Fluctuance c. Heat/localized warmth d. Tenderness to palpation e. Swelling/induration

⁃ In patients age birth to \< 3 months, each patient must meet the following inclusion criteria to be enrolled in this study.

∙ Male or female patients from birth to \< 3 months of age, including pre-term neonates (gestational age ≥ 32 weeks)

‣ A clinical picture compatible with an ABSSSI suspected or confirmed to be caused by Gram-positive bacteria, including MRSA.

∙ OR

∙ Suspected or confirmed sepsis including any of the following clinical criteria:

• Hypothermia (\<36°C) OR fever (\>38.5°C)

• Bradycardia OR tachycardia OR rhythm instability

• Hypotension OR mottled skin OR impaired peripheral perfusion

• Petechial rash

• New onset or worsening of apnea episodes OR tachypnea episodes OR increased oxygen requirements OR requirement for ventilation support

• Feeding intolerance OR poor sucking OR abdominal distension

• Irritability

• Lethargy

• Hypotonia

‣ In addition, patients must meet at least one of the following laboratory criteria:

∙ a. White blood cell count ≤4.0 × 10\^9/L OR ≥20.0 × 10\^9/L b, Immature to total neutrophil ratio \>0.2 c. Platelet count ≤100 × 10\^9/L d. C-reactive protein (CRP) \>15 mg/L OR procalcitonin ≥ 2 ng/mL e. Hyperglycemia OR Hypoglycemia f. Metabolic acidosis

‣ Infections must be of sufficient severity to merit hospitalization and parenteral antibiotic therapy. These infections may include:

⁃ Cutaneous or subcutaneous abscess

• Surgical site or traumatic wound infection

• Cellulitis, Erysipelas

• Omphalitis

• Impetigo and bullous impetigo

• Pustular folliculitis

• Scarlet fever

• Staphylococcal scalded skin syndrome

• Streptococcal toxic shock syndrome

⁃ Erythematous based-erosion

⁃ Other infections originating in the skin or subcutaneous tissue and associated with signs and symptoms of sepsis as defined in Inclusion Criterion 2.

‣ Patients must be expected to survive with appropriate antibiotic therapy and appropriate supportive care throughout the study.