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Background In the solid organ transplant (SOT) population, West Nile virus (WNV) neuroinvasive disease can have significant morbidity and mortality. We evaluated cerebrospinal fluid (CSF) findings in neuroinvasive WNv infections among SOT recipients. Methods We retrospectively reviewed medical records of all SOT recipients at our institution with WNv neuroinvasive disease (meningitis, encephalitis, meningo-encephalitis) from 2010 to 2018. Descriptive statistics were examined on key variables. Results Eight transplant patients with mean age 54.47 years (12.79) were included: 5 kidney transplants, 1 in each kidney-pancreas, liver and lung transplants. Median time from transplant to infection was 49.8 months (2.7-175.4) and mean time-to-diagnosis 2 days (1.31) . On admission, mean total CSF WBC count was 134.57 cells/mm3 (150.82), mean lymphocyte count 56.29 cells/mm3 (32.32), mean neutrophil count 27.14 cells/mm3 (34.34), and mean CSF protein 95.4 mg/dL (40.52mg/dL). West Nile virus CSF IgG at the time of diagnosis was negative in 7 patients, and not performed on 1 patient. WNv diagnosis is depicted below. Serum and CSF WNV Antibodies in Neuroinvasive Disease in SOT Recipients WNV CSF and serum IgG was negative at the time of diagnosis in 7/8 patients. Initial CSF IgM was positive in 3 out of 7 patients. Conclusion WNv infection produces a CSF pleocytosis with neutrophilic predominance, though we noted more lymphocytic predominance among SOT recipients. CSF IgM and IgG are important diagnostics in neuroinvasive WNv. Disclosures Diana F. Florescu, MD, AlloVir: Grant/Research Support|Merck: Advisor/Consultant|Merck: Grant/Research Support|NobelPharma: Grant/Research Support|Novavax: Grant/Research Support|Regeneron: Grant/Research Support|SymBio: Grant/Research Support|Takeda: Advisor/Consultant|Takeda: Grant/Research Support.

Background Antibiotic overuse increases health care cost and promotes antimicrobial resistance. People with HIV (PWH) who develop acute respiratory infections (ARIs) may be assumed to be “higher risk,” compared with non-PWH, but comparative antibiotic use evaluations have not been performed. Methods This observational, single-center study compared antibiotic prescribing in independent clinical encounters for PWH and non-PWH diagnosed with ARI in outpatient clinical practices using International Classification of Diseases, 10th Revision, codes between January 1, 2014, and April 30, 2018. The Fisher exact test compared categorical variables with antibiotic prescribing patterns. Results There were 209 patients in the PWH cohort vs 398 patients in the non-PWH cohort. PWH had a median CD4+ count of 610 cells/mm3, with 91% on antiretroviral therapy and 78% virally suppressed. Thirty-seven percent of all visits resulted in an antibiotic prescription, and 89% were inappropriate. Antibiotics were prescribed more frequently in non-PWH (35% PWH vs 40% non-PWH; P = .172) and managed according to guidelines more often in PWH (37% PWH vs 30% non-PWH; P = .039). Antibiotics were prescribed appropriately most frequently in PWH managed by HIV clinicians (29% PWH managed by HIV clinician vs 12% PWH managed by non-HIV clinician vs 8% non-PWH; P = .010). HIV clinicians prescribed antibiotics for a mean duration of 5.9 days vs PWH managed by a non-HIV clinician for 9.1 days vs non-PWH for 7.6 days (P Conclusions Outpatient antibiotic overuse remains prevalent among patients evaluated for ARI. We found less frequent inappropriate antibiotic use in PWH. Prescriber specialty, rather than HIV diagnosis, was related to appropriateness of antimicrobial prescribing.

Background HIV infection in pregnant females confers a higher risk of morbidity and obstetric complications. Widespread use of anti-retroviral therapy (ART) has dramatically decreased vertical HIV transmission. US HIV-infected pregnant females continue to be at higher risk for obstetric complications compared with nonHIV infected females. This study will be conducted with the objective to estimate the current US morbidity and mortality in HIV-infected pregnant females as well as incidence of obstetric complications in this patient population. Methods The National Inpatient Sample (NIS) was utilized to identify hospitalizations associated with pregnancy from 2002 to 2014. The aggregation of hospitalizations was stratified into 2 groups based on HIV status to determine whether there were differences in demographic factors, complications, and mortality. All analyses accounted for the NIS sampling design. Results There were 39,404,956 pregnancy-related hospitalizations identified; of which, 51,762 were also associated with a positive HIV status. There were differences in complications for those with and without HIV, which included eclampsia (1.27% vs. 0.45%; P < 0.001), preterm labor (11.81% vs. 6.41%; P < 0.001), gestational diabetes (0.92% vs. 0.38%; P < 0.001), group B strep (0.03% vs. Conclusion As ART are readily available, we expected better outcomes for our HIV-positive pregnant females. Our results are concerning that there is such an increase rate of mortality and health disparity in HIV-positive pregnant females. As this is a retrospective study, there are limitation and further studies need to be conducted. Disclosures All authors: No reported disclosures.

Background As the pipeline for antibiotics is decreasing and antibiotic resistance is increasing, it is critically important to be stewards of antibiotics. ASP has become a mandated program as of January of 2017 by Joint Commission and condition of participation for CMS on reimbursement. A pilot program of C. difficile treatment in the academic medical center proved to be quite useful to adapt to a larger healthcare system. Methods A dedicated Infectious Disease physician and three Antibiotics stewardship pharmacists (ASP) were hired to run this program. Goals of the program was to decrease broad-spectrum antibiotics use, and reduce Clostridium difficile readmission (CDR) for the healthcare system. Performance of CDR for each inpatient was accomplished with ASP making recommendations for treatment. Queries were built into the ASP software and alerts were generated in the electronic medical record (EMR). CDR was targeted daily for ASP pharmacists/ID physician. Comparison of fiscal year 2017 (control group) with 2018 (intervention group) was performed. Results CDR was reduced (control group 17.53% vs. intervention group 14.12%), respectively, for our healthcare system (P > 0.05). However, overall cost savings for the healthcare system was $1.3 million was realized. In the academic medical center specifically, with over 400 beds there was a significant reduction in CDR (control group 21% to intervention group 10.5% (P < 0.05). Cost savings estimated from CDR were $610,923. Finally, length of stay was reduced by 1 day for inpatients with C. difficile admission in the academic medical center. Conclusion ASP not only has immediate impact on patient care and safety but also can play a large role in treating the appropriate disease state and reduces unnecessary readmission to the acute care hospitals in our healthcare system. Disclosures All authors: No reported disclosures.