Comparison of Teicoplanin and Vancomycin in Initial Empirical Antibiotic Regimen for Febrile Neutropenic Patients

Inclusion Criteria: * Will initiate study drug treatment in the hospital; * Has a life expectancy exc. 1 month.Is male or a non-pregnant, non-lactating female, who is post-menopausal, surgically sterilized; or has been using one or more birth control methods for at least two months prior to study entry. * Effective contraception must continue for at least 30 days after treatment discontinuation; Exclusion Criteria: * Has a history of suspected or documented Type I hypersensitivity reaction (e.g. anaphylactic or anaphylactoid shock, respiratory distress from bronchospasm or rash) to glycopeptides (vancomycin or teicoplanin), aminoglycosides, b-lactams or cephalosporins * Has renal dysfunction requiring dialysis ; * Has neutropenia associated with a syndrome that is not generally thought to be associated with a high risk of bacterial infection (e.g., chronic benign neutropenia); * Is in blast crisis of chronic myeloid leukemia; * Has a known underlying immunocompromising disease likely to interfere with the evaluation of therapeutic response, such as infection with human immunodeficiency virus (HIV) ; * Had isolation and identification of a specific pathogen suspected to be responsible for fever ;Has documented colonization with vancomycin-resistant Enterococcus faecium or with Enterococcus faecalis * Had received more than one dose of a systemic (whether oral or parenteral) antibiotic within 3 calendar days preceding the initial therapy for this episode of fever; * Has received oral vancomycin for prophylaxis of Gram-positive infection; * Requires addition of anti-viral, anti-anaerobic or anti-fungal coverage at the same time as study medication; however, antiviral or antifungal prophylaxis is allowed, provided that it is not started at the same time than study medication. * Has suspected, invasive fungal disease (e.g. image of necrotic pneumonia), peri-rectal infection, liver abscess, or necrotizing enterocolitis (typhlitis). * Had a negative serum or urine laboratory pregnancy test (for all women except those post-menopausal or surgically sterilized). * The patient has one of the following:Leukemia, lymphoma, Hodgkin's disease, solid tumors or who had undergone bone marrow transplantation (for any reason) * Had neutropenia at the time of initiation of initial empiric antibiotic therapy, defined as \<500 neutrophils/mm3 of blood; or if ³500 but \<1,000 neutrophils/mm3 and expected to fall below 500 neutrophils/mm3 within 48 hours. * Has at least one of the following conditions: * clinically obvious, serious catheter-related infections. For a patient with documented catheter-related infection due to an organism other than coagulase negative staphylococci, the catheter has been removed within 24 hours of identification (removal over a guidewire is permitted). * Intensive chemotherapy that produces substantial mucosal damage (i.e., high-dose cytarabine (\> 1 g/m2/day, which increases the risk for penicillin resistant streptococcal infections, particularly those due to viridans streptococci); * prophylaxis with quinolones before the onset of the febrile episode; known colonization with pneumococci that are resistant to penicillin and -cephalosporins or methicillin-resistant S. aureus; a blood culture positive for gram-positive bacteria before final identification and susceptibility