Publications by authors named "J T Gaensbauer"

Introduction: Identifying tuberculosis infection (TBI) using interferon-gamma release assays (IGRAs) is a primary component of clinical and public health efforts to prevent pediatric tuberculosis (TB). Pediatric data comparing the 2 IGRAs in the United States are very limited. We compared the performance of the 2 IGRAs among a large pediatric cohort tested for TBI and assessed whether discordance might be due to quantitative results close to test cutoff values.

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Pediatric multidrug-resistant tuberculosis (MDR-TB) remains a significant global problem, and there are numerous barriers preventing children with MDR-TB from being identified, confirmed with microbiologic tests, and treated with a safe, practical, and effective regimen. However, several recent advances in diagnostics and treatment regimens have the promise to improve outcomes for children with MDR-TB. We introduce this review with two cases that exemplify both the challenges in management of MDR-TB in children, but also the potential to achieve a positive outcome.

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Over the last decade, there have been widespread efforts to reduce non-evidence-based therapies for viral bronchiolitis. We question whether this change in practice has inadvertently impacted the diagnosis and management of other pediatric lower-respiratory-tract illnesses. We used the Pediatric Health Information System (PHIS) and logistic regression to describe trends in relative diagnosis frequency of bronchiolitis, viral pneumonia, and reactive airway disease (RAD)/asthma as well as systemic corticosteroid use among children of the age range 1 to 4 years over a 10-year period.

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Article Synopsis
  • Multiplex PCR panels are commonly used to diagnose central nervous system infections, but they are less sensitive for detecting herpes simplex virus (HSV) compared to targeted PCR tests.
  • A study analyzed data from 1,387 patients tested with both multiplex (BioFire MEP) and targeted HSV PCR (Diasorin Simplexa) from December 2018 to June 2022, revealing that 25 patients tested positive, with 11 showing discordant results between assays.
  • Patients with discordant results who were positive on targeted PCR but negative on multiplex had milder illness, indicated by higher PCR threshold values and less severe clinical symptoms, suggesting that targeted testing may be sufficient in certain cases.
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