Chlorhexidine Gluconate Cleansing in Preventing Central Line Associated Bloodstream Infection and Acquisition of Multi-drug Resistant Organisms in Younger Patients With Cancer or Undergoing Donor Stem Cell Transplant

Inclusion Criteria: * TRANSPLANT PATIENTS: all patients undergoing planned allogeneic transplant (both malignant and non-malignant diagnoses) * ONCOLOGY PATIENTS: patients with an oncology diagnosis that are or will be on a chemotherapy regimen that will last for an additional \>= 3 months or are on or will be on a chemotherapy regimen for \< 3 months and then proceed to transplant (allogeneic or autologous stem cell rescue) during the 3-month study period * Patients undergoing allogeneic transplant must have, or be scheduled to have, an external tunneled central venous catheter (CVC) (Broviacs, Hickmans, tunneled percutaneously inserted central catheter \[PICCs\], etc.) and/or non-tunneled percutaneously inserted central catheter (PICC) that is expected to remain in place for an additional \>= 3 months * Patients with acute myelogenous leukemia (AML) or relapsed acute lymphoblastic leukemia (ALL) that will receive chemotherapy with/without transplant must have, or be scheduled to have, an external tunneled CVC (Broviacs, Hickmans, tunneled PICCs, etc.) and/or non-tunneled PICC that is expected to remain in place for an additional \>= 3 months * All other oncology patients that will receive chemotherapy with/without transplant must have, or be scheduled to have, an external tunneled CVC (Broviacs, Hickmans, tunneled PICCs, etc.) that is expected to remain in place for an additional \>= 3 months * All patients and/or their parents or legal guardians must sign a written inform…