John Z Metcalfe
Affiliation: University of California
- Test variability of the QuantiFERON-TB gold in-tube assay in clinical practiceJohn Z Metcalfe
University of California, San Francisco, Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital, 1001 Potrero Avenue, Room 5K1, San Francisco, CA 94110 0111, USA
Am J Respir Crit Care Med 187:206-11. 2013..Although IFN-γ release assays (IGRAs) are widely used to screen for Mycobacterium tuberculosis infection in high-income countries, published data on repeatability are limited...
- Evaluation of quantitative IFN-gamma response for risk stratification of active tuberculosis suspectsJohn Z Metcalfe
San Francisco General Hospital, University of California, 94110 0111, USA
Am J Respir Crit Care Med 181:87-93. 2010..Objectives: To determine whether the addition of quantitative IGRA results to a prediction model incorporating clinical criteria improves risk stratification of smear-negative-tuberculosis suspects...
- Determinants of multidrug-resistant tuberculosis clusters, California, USA, 2004-2007John Z Metcalfe
University of California, San Francisco, California, USA
Emerg Infect Dis 16:1403-9. 2010..In multivariate analysis, the katG S315T mutation (odds ratio 11.2, 95% confidence interval 2.2-Yen; p = 0.004), but not strain lineage, was independently associated with case clustering...
- Interferon-γ release assays for active pulmonary tuberculosis diagnosis in adults in low- and middle-income countries: systematic review and meta-analysisJohn Z Metcalfe
Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital, San Francisco, CA, USA
J Infect Dis 204:S1120-9. 2011..The diagnostic value of interferon-γ release assays (IGRAs) for active tuberculosis in low- and middle-income countries is unclear...
- Clinical characteristics and treatment outcomes of patients with isoniazid-monoresistant tuberculosisAdithya Cattamanchi
Division of Pulmonary and Critical Care Medicine, University of California San Francisco, San Francisco GeneralHospital, 1001 Potrero Ave, San Francisco, CA 94110, USA
Clin Infect Dis 48:179-85. 2009..Risk factors and treatment outcomes under program conditions for isoniazid (INH)-monoresistant tuberculosis have not been well described...
- Genotyping of Mycobacterium tuberculosis: application in epidemiologic studiesMidori Kato-Maeda
University of California, San Francisco, Francis J Curry National Tuberculosis Center, Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital, 1001 Potrero Avenue, Building 100, Room 109, Mail Box 0841, San Francisco, CA 94110 0111, USA
Future Microbiol 6:203-16. 2011..In this article, we review the genetic markers used in molecular epidemiologic studies including the use of whole-genome sequencing technology. We also review the public health application of molecular epidemiologic tools...
- Interferon-gamma release assays for the diagnosis of latent tuberculosis infection in HIV-infected individuals: a systematic review and meta-analysisAdithya Cattamanchi
Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital, University of California, San Francisco, CA, USA
J Acquir Immune Defic Syndr 56:230-8. 2011..To determine whether interferon-gamma release assays (IGRAs) improve the identification of HIV-infected individuals who could benefit from latent tuberculosis infection therapy...
- Tuberculosis and HIV co-infection, California, USA, 1993–2008John Z Metcalfe
University of California, San Francisco, CA, USA
Emerg Infect Dis 19:400-6. 2013..In California, HIV-associated TB has concentrated among persons from low- and middle-income countries who often acquire HIV infection in the peri-immigration period...
- A causal framework for understanding the effect of losses to follow-up on epidemiologic analyses in clinic-based cohorts: the case of HIV-infected patients on antiretroviral therapy in AfricaElvin H Geng
Division of HIV AIDS and Infectious Diseases, San Francisco General Hospital, Department of Medicine, School of Medicine, University of California, San Francisco, 995 Potrero Avenue, Building 80, Box 0874, San Francisco, CA 94110, USA
Am J Epidemiol 175:1080-7. 2012..A sampling-based approach can in general strengthen epidemiologic analyses conducted in many clinic-based cohorts, including those examining other diseases...
- Clinical and radiographic factors do not accurately diagnose smear-negative tuberculosis in HIV-infected inpatients in Uganda: a cross-sectional studyJ Lucian Davis
Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California, United States of America
PLoS ONE 5:e9859. 2010..Therefore, we sought to assess the accuracy of symptoms, physical signs, and radiographic findings for diagnosing tuberculosis in this population in a low-income country with a high incidence of tuberculosis...