Publications by authors named "Sana Arif"

Background: Although intravesical Bacillus Calmette-Guerin (BCG) immunotherapy usually exhibits a favorable safety profile, it can lead to the development of BCG infections, both localized and disseminated. Understanding of BCG infections following intravesical BCG immunotherapy is limited because of the lack of consensus definitions of BCG infections and limited post-instillation follow-up. We aim to perform a systematic review of the literature of BCG infections following intravesical BCG immunotherapy to elucidate the epidemiology, risk factors, and outcomes of BCG infections.

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Background: Invasive primary surgical site infections (IP-SSI) are a severe complication of liver transplant surgery. Identification of risk factors for IP-SSI is critical to IP-SSI prevention.

Methods: All adult single liver transplants performed at Duke University Hospital in the period 2015-2020 were reviewed for IP-SSI occurring within 90 d of transplant.

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Article Synopsis
  • Belatacept is used to prevent rejection in lung transplant patients, but the infection risks associated with its use haven't been thoroughly studied.
  • A retrospective study analyzed infections in 52 lung transplant recipients treated with belatacept from 2011 to 2022, revealing significant rates of viral and bacterial infections, particularly cytomegalovirus (CMV).
  • The findings highlight the need for collaborative research to further investigate infection risks and management strategies for lung transplant recipients receiving belatacept.
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Article Synopsis
  • - Researchers studied maribavir (MBV) to treat 15 cases of difficult-to-treat cytomegalovirus infections in 13 solid organ transplant patients.
  • - Nearly half of the treatment episodes (47%) faced failure because of new MBV resistance or virus returning soon after stopping the medication.
  • - On the positive side, 40% of the treatment episodes resulted in sustained viral clearance, meaning the virus was eliminated effectively.*
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This study identified 26 late invasive primary surgical site infection (IP-SSI) within 4-12 months of transplantation among 2073 SOT recipients at Duke University Hospital over the period 2015-2019. Thoracic organ transplants accounted for 25 late IP-SSI. Surveillance for late IP-SSI should be maintained for at least one year following transplant.

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Mollicute infections, caused by Mycoplasma and Ureaplasma species, are serious complications after lung transplantation; however, understanding of the epidemiology and outcomes of these infections remains limited. We conducted a single-center retrospective study of 1156 consecutive lung transplants performed from 2010-2019. We used log-binomial regression to identify risk factors for infection and analyzed clinical management and outcomes.

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Article Synopsis
  • Surgical site infections (SSI) are serious complications for solid organ transplant (SOT) patients, with a study at Duke University identifying 198 cases among 2073 recipients from 2015 to 2019.
  • The rate of invasive primary SSI (IP-SSI) decreased over the years but was notably higher in multi-organ transplants compared to single-organ ones, leading to longer hospital stays and increased mortality rates.
  • Gram-positive bacteria were the most common pathogens causing IP-SSI, but other unexpected pathogens, such as urogenital Mollicute and atypical Mycobacteria, were particularly seen in lung transplant cases, highlighting the need for better management of this complication.
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Background: Risk factors for acquisition of vancomycin-resistant (VRE) include immunosuppression, antibiotic exposure, indwelling catheters, and manipulation of the gastrointestinal tract, all of which occur in liver transplant recipients. VRE infections are documented in liver transplantation (LT); however, only one single center study has assessed the impact of daptomycin-resistant (DRE) in this patient population.

Methods: We conducted a retrospective multicenter cohort study comparing liver transplant recipients with either VRE or DRE bacteremia.

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Background: Short duration, antimicrobial prophylaxis that includes antistaphylococcal activity is recommended at the time of left ventricular assist device (LVAD) implantation to reduce infection-related complications. There continues to be wide variability in surgical infection prophylaxis (SIP) regimens among implantation centers. The aim of this study is to characterize current SIP regimens at different LVAD centers.

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Background: Respiratory syncytial virus (RSV) infection in lung transplant recipients (LTRs) causes mortality rates of 10%-20% despite antiviral therapy. Ribavirin (RBV) has been used to treat RSV-infected LTRs with limited data.

Methods: A retrospective study including all LTRs at Duke Hospital during January 2013-May 2017 with positive RSV polymerase chain reaction respiratory specimens was performed.

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Microsporidiosis is an emerging opportunistic infection in immunocompromised patients. We report a case of fatal disseminated infection in a profoundly immunosuppressed pancreas and kidney transplant recipient.

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Treatment options for drug-resistant cytomegalovirus (CMV) are limited. Letermovir is a novel antiviral recently approved for CMV prophylaxis following hematopoietic cell transplantation, but its efficacy in other settings is unknown. We recently used letermovir for salvage treatment in four solid organ transplant recipients with ganciclovir-resistant CMV retinitis.

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Immunocompromised patients are at high risk for invasive fungal infections (IFIs); although Aspergillus remains the most common IFI caused by molds, other fungi, such as Mucorales, dematiaceous molds, and Fusarium spp, are being seen with increasing frequency. Presentations can vary, but sinopulmonary and disseminated infections are common. Our understanding of the pathogenesis of these infections is rudimentary.

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The role of infection with Mycoplasma hominis following cardiothoracic organ transplantation and its source of transmission have not been well-defined. Here, we identify and describe infection with M. hominis in patients following cardiothoracic organ transplantation after reviewing all cardiothoracic transplantations performed at our center between 1998 and July 2015.

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OBJECTIVE We sought to determine whether the bacterial burden in the nares, as determined by the cycle threshold (CT) value from real-time MRSA PCR, is predictive of environmental contamination with MRSA. METHODS Patients identified as MRSA nasal carriers per hospital protocol were enrolled within 72 hours of room admission. Patients were excluded if (1) nasal mupirocin or chlorhexidine body wash was used within the past month or (2) an active MRSA infection was suspected.

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We present a case of disseminated Neosartorya pseudofischeri infection in a bilateral lung transplant patient with cystic fibrosis. The organism was originally misidentified from respiratory specimens as Aspergillus fumigatus using colonial and microscopic morphology. DNA sequencing subsequently identified the organism correctly as N.

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