Background-We comprehensively defined household longitudinal, strain-level Staphylococcus aureus transmission dynamics in households of children with community-associated methicillinresistant S. aureus (CA-MRSA) skin and soft tissue infection (SSTI).Methods-Between 2012-2015, 150 children, their household contacts, and pets were enrolled in a prospective cohort study in metropolitan Saint Louis, MO. Serial cultures to detect S. aureus were collected from three anatomic sites of household members, two dog/cat sites, and 21

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Introduction-In 2001, in response to an overwhelming increase in patient visits for various pediatric abscesses, burns, and other wounds, an ambulatory burn and procedural sedation program (PAWS) was developed to minimize Operating Room utilization. The purpose of this study is to report our initial seven year experience with the PAWS program

19631 To reduce the risk of HA EFI, our ICUs, onc inpatient and stem cell transplant (SCT) units are centrally HEPA filtered and portable HEPA filters are used in each onc outpatient clinic room. Anticipating demolition and then construction of a new, adjacent hospital tower, infection control (IC) verified (Feb 2006) that all windows were completely sealed, provided valet parking remote to the construction and N95 respirators to be worn in all areas except the HEPA filtered locations for immunosuppressed pts to reduce exposure to construction dust; a known risk factor for HA EFI. Eleven new cases of possible HA EFI were diagnosed in 2006: 3 part of a Jan-Feb cluster related to a new construction elevator and malfunction of a door to the outside and 8 clustered July-Oct after demolition and construction began in April. This compares with only 4 cases in 2005. The primary diagnoses in 2006 were AML (6), ALL (4), and hemophagocytic lymphohistiocytosis (1) versus AML (2) and SCT (2) in 2005. Pts with AML and SCT received antifungal prophylaxis or were receiving antifungal therapy at the time of EFI diagnosis. Different isolates were identified including Aspergillus (numerous species), Scedosporium, Fusarium, and Rhizopus; sites of infection included paranasal sinuses (5), pulmonary (6), skin (2) and GI tract (1). 3 of 11 pts died; all required long term antifungal therapy, and most required altered chemotherapy. 4 of 8 pts in the Jul-Oct cluster had been in rooms later found to have faulty window caulking caused by severe weather conditions in Mar 2006. Our data suggest that despite implementation of measures to prevent HA EFI, new sources of outside air and construction dust likely led to an increase in HA EFI. The absence of HA EFI in SCT pts in 2006 may be attributed to the positive pressurization of the SCT unit, location of the unit facing away from the construction site and the antifungal prophylaxis used. The variety of fungi also support outside air as a source. After the faulty caulking was identified and repaired, no further HA EFI occurred; a case-control study is underway to identify important risk factors. Vigilance for potential new sources of contaminated air is required on units with high risk patients. No significant financial relationships to disclose.