Bharat S Parekh

Summary

Affiliation: Centers for Disease Control and Prevention
Country: USA

Publications

  1. doi request reprint Development of two avidity-based assays to detect recent HIV type 1 seroconversion using a multisubtype gp41 recombinant protein
    Xierong Wei
    Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 26:61-71. 2010
  2. ncbi request reprint Quantitative detection of increasing HIV type 1 antibodies after seroconversion: a simple assay for detecting recent HIV infection and estimating incidence
    Bharat S Parekh
    Division of AIDS, STD, TB Laboratory Research, and Division of HIV AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 18:295-307. 2002
  3. doi request reprint Dried tube specimens: a simple and cost-effective method for preparation of HIV proficiency testing panels and quality control materials for use in resource-limited settings
    Bharat S Parekh
    International Laboratory Branch, Division of Global AIDS, Centers for Disease Control and Prevention, Atlanta, GA 30345, USA
    J Virol Methods 163:295-300. 2010
  4. doi request reprint Determination of mean recency period for estimation of HIV type 1 Incidence with the BED-capture EIA in persons infected with diverse subtypes
    Bharat S Parekh
    Division of Global AIDS Program, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 27:265-73. 2011
  5. ncbi request reprint Comparison of HIV type 1 incidence observed during longitudinal follow-up with incidence estimated by cross-sectional analysis using the BED capture enzyme immunoassay
    J Steven McDougal
    Division of HIV AIDS Prevention, National Center for HIV AIDS, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 22:945-52. 2006
  6. ncbi request reprint HIV type 1 incidence estimates by detection of recent infection from a cross-sectional sampling of injection drug users in Bangkok: use of the IgG capture BED enzyme immunoassay
    Dale J Hu
    Division of HIV AIDS Prevention and Division of AIDS, STD, TB Laboratory Research, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 19:727-30. 2003
  7. doi request reprint Development of a novel rapid HIV test for simultaneous detection of recent or long-term HIV type 1 infection using a single testing device
    Timothy C Granade
    Division of HIV AIDS, National Center for HIV, Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA
    AIDS Res Hum Retroviruses 29:61-7. 2013
  8. pmc A comprehensive evaluation of the proficiency testing program for the HIV-1 BED incidence assay
    Trudy Dobbs
    International Laboratory Branch, Division of Global HIV AIDS, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30329, USA
    J Clin Microbiol 49:3470-3. 2011
  9. pmc Detection of recent HIV-1 infection using a new limiting-antigen avidity assay: potential for HIV-1 incidence estimates and avidity maturation studies
    Yen T Duong
    Division of Global HIV AIDS, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
    PLoS ONE 7:e33328. 2012
  10. pmc Performance characteristics of the immunoglobulin G-capture BED-enzyme immunoassay, an assay to detect recent human immunodeficiency virus type 1 seroconversion
    Trudy Dobbs
    HIV Immunology and Diagnostics Branch, Mailstop D12, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333, USA
    J Clin Microbiol 42:2623-8. 2004

Collaborators

Detail Information

Publications23

  1. doi request reprint Development of two avidity-based assays to detect recent HIV type 1 seroconversion using a multisubtype gp41 recombinant protein
    Xierong Wei
    Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 26:61-71. 2010
    ..The new avidity-based assays using rIDR-M antigen may improve the accuracy of detecting recent HIV-1 infection and allow a better estimation of incidence in diverse HIV-1 subtypes...
  2. ncbi request reprint Quantitative detection of increasing HIV type 1 antibodies after seroconversion: a simple assay for detecting recent HIV infection and estimating incidence
    Bharat S Parekh
    Division of AIDS, STD, TB Laboratory Research, and Division of HIV AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 18:295-307. 2002
    ..This assay should be useful for detecting recent HIV-1 infection and for estimating incidence among diverse HIV-1 subtypes worldwide...
  3. doi request reprint Dried tube specimens: a simple and cost-effective method for preparation of HIV proficiency testing panels and quality control materials for use in resource-limited settings
    Bharat S Parekh
    International Laboratory Branch, Division of Global AIDS, Centers for Disease Control and Prevention, Atlanta, GA 30345, USA
    J Virol Methods 163:295-300. 2010
    ..Results demonstrate that the DTS is a simple to use, practical method to prepare and distribute PT panels and quality control specimens to monitor HIV testing practices in RLS...
  4. doi request reprint Determination of mean recency period for estimation of HIV type 1 Incidence with the BED-capture EIA in persons infected with diverse subtypes
    Bharat S Parekh
    Division of Global AIDS Program, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 27:265-73. 2011
    ..The determination of ω with more data and new methodology suggests that ω of the BED-CEIA varies between different subtypes and/or populations. These estimates for ω may affect incidence estimates in various studies...
  5. ncbi request reprint Comparison of HIV type 1 incidence observed during longitudinal follow-up with incidence estimated by cross-sectional analysis using the BED capture enzyme immunoassay
    J Steven McDougal
    Division of HIV AIDS Prevention, National Center for HIV AIDS, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 22:945-52. 2006
    ..Cross-sectional HIV incidence estimation circumvents many of the drawbacks associated with longitudinal cohort studies, but there are test-specific limitations that should be considered in the design of population surveys...
  6. ncbi request reprint HIV type 1 incidence estimates by detection of recent infection from a cross-sectional sampling of injection drug users in Bangkok: use of the IgG capture BED enzyme immunoassay
    Dale J Hu
    Division of HIV AIDS Prevention and Division of AIDS, STD, TB Laboratory Research, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 19:727-30. 2003
    ....
  7. doi request reprint Development of a novel rapid HIV test for simultaneous detection of recent or long-term HIV type 1 infection using a single testing device
    Timothy C Granade
    Division of HIV AIDS, National Center for HIV, Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA
    AIDS Res Hum Retroviruses 29:61-7. 2013
    ..89). The new rapid I-P test has great potential to simplify HIV surveillance efforts by simultaneously providing information on both HIV prevalence and incidence using a single, rapid test device...
  8. pmc A comprehensive evaluation of the proficiency testing program for the HIV-1 BED incidence assay
    Trudy Dobbs
    International Laboratory Branch, Division of Global HIV AIDS, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30329, USA
    J Clin Microbiol 49:3470-3. 2011
    ..This program will also serve as a template for future PT programs for new incidence assays as they become available...
  9. pmc Detection of recent HIV-1 infection using a new limiting-antigen avidity assay: potential for HIV-1 incidence estimates and avidity maturation studies
    Yen T Duong
    Division of Global HIV AIDS, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
    PLoS ONE 7:e33328. 2012
    ..We previously described a single-well limiting-antigen avidity enzyme immunoassay (LAg-Avidity EIA) to detect recent HIV-1 infection...
  10. pmc Performance characteristics of the immunoglobulin G-capture BED-enzyme immunoassay, an assay to detect recent human immunodeficiency virus type 1 seroconversion
    Trudy Dobbs
    HIV Immunology and Diagnostics Branch, Mailstop D12, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333, USA
    J Clin Microbiol 42:2623-8. 2004
    ..This information provides baseline data for the successful transfer of BED-CEIA to other laboratories and the use of BED-CEIA for the detection of recent HIV seroconversion and the calculation of incidence estimates worldwide...
  11. ncbi request reprint Surveillance for HIV-1 incidence using tests for recent infection in resource-constrained countries
    J Steven McDougal
    National Center for HIV AIDS, STD, TB Prevention, Centers for Disease Control and Prevention, US Public Health Service, Atlanta, GA 30333, USA
    AIDS 19:S25-30. 2005
    ....
  12. pmc Modification of rapid human immunodeficiency virus (HIV) antibody assay protocols for detecting recent HIV seroconversion
    Stephen D Soroka
    Division of HIV AIDS Prevention, National Center for HIV AIDS, STD, and TB Prevention, Atlanta, GA 30333, USA
    Clin Diagn Lab Immunol 12:918-21. 2005
    ..98). Our results indicate that rapid HIV tests can be modified to detect recent seroconversion with results comparable to those from less sensitive EIA...
  13. pmc Assessment of BED HIV-1 incidence assay in seroconverter cohorts: effect of individuals with long-term infection and importance of stable incidence
    Janet M McNicholl
    Division of HIV AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
    PLoS ONE 6:e14748. 2011
    ..We sought to assess its performance in three longitudinal cohorts from Thailand where HIV-1 CRF01_AE and subtype B' dominate the epidemic...
  14. pmc HIV testing in developing countries: what is required?
    George Alemnji
    Centers for Disease Control and Prevention, Center for Global Health, 1600 Clifton Road, Atlanta, GA 30329, USA
    Indian J Med Res 134:779-86. 2011
    ....
  15. ncbi request reprint Application of laboratory methods for estimation of HIV-1 incidence
    Bharat S Parekh
    HIV Immunology and Diagnostics Branch, Division of HIV AIDS Prevention, National Center for HIV, STD and TB Prevention, Centers for Disease Control and Prevention, Mailstop D 12, 1600 Clifton Road, Atlanta, GA 30333, USA
    Indian J Med Res 121:510-8. 2005
    ....
  16. doi request reprint Evaluating the BED capture enzyme immunoassay to estimate HIV incidence among adults in three countries in sub-Saharan Africa
    Andrea A Kim
    Global AIDS Program, Centers for Disease Control and Prevention CDC, Atlanta, Georgia 30333, USA
    AIDS Res Hum Retroviruses 26:1051-61. 2010
    ..Until improved assays are available, caution should be applied in the use and interpretation of data from incidence assays...
  17. doi request reprint Scaling up HIV rapid testing in developing countries: comprehensive approach for implementing quality assurance
    Bharat S Parekh
    Serology Incidence and Diagnostics Team, GAP International Laboratory Branch, 1600 Clifton Rd, MS G19, Bldg 15 2611, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
    Am J Clin Pathol 134:573-84. 2010
    ..Systematic implementation of these tools should greatly enhance the quality of HIV rapid testing...
  18. ncbi request reprint Detecting recent human immunodeficiency virus type 1 infection: why and how?
    Trudy Dobbs
    HIV Serology and Diagnostics Laboratory, HIV Immunology and Diagnostics Branch, Division of HIV, STD and TB Laboratory Research, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA
    MLO Med Lab Obs 35:12-4, 16, 19-20 passim; quiz 24-5. 2003
  19. ncbi request reprint Performance of the OraQuick and Hema-Strip rapid HIV antibody detection assays by non-laboratorians
    Timothy C Granade
    National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention, 1600 Clifton Road, NE MS D 12, Atlanta, GA 30333, USA
    J Clin Virol 30:229-32. 2004
    ..However, the number of invalid tests was greatly reduced when participants received a demonstration. Appropriate RT training for non-laboratorians and continued monitoring of HIV RT performance in non-laboratory settings is recommended...
  20. pmc Evaluation of rapid prenatal human immunodeficiency virus testing in rural cameroon
    Timothy C Granade
    Centers for Disease Control and Prevention, 1600 Clifton Rd, NE MS D 12, Atlanta, GA 30333, USA
    Clin Diagn Lab Immunol 12:855-60. 2005
    ..7%, respectively. HIV RTs provide excellent alternatives for identifying HIV infection, and their field performance could be monitored using DBS testing strategies...
  21. doi request reprint Improved HIV-1 incidence estimates using the BED capture enzyme immunoassay
    John W Hargrove
    ZVITAMBO Project, Harare, Zimbabwe
    AIDS 22:511-8. 2008
    ..To validate the BED capture enzyme immunoassay for HIV-1 subtype C and to derive adjustments facilitating estimation of HIV-1 incidence from cross-sectional surveys...
  22. pmc Trends of HIV-1 seroincidence among HIV-1 sentinel surveillance groups in Cambodia, 1999-2002
    Vonthanak Saphonn
    National Center for HIV AIDS, Dermatology and STDs, Phnom Penh, Cambodia and the Department of Epidemiology, University of California School of Public Health, Los Angeles, CA 90095 1772, USA
    J Acquir Immune Defic Syndr 39:587-92. 2005
    ..12 to 0.89%. In conclusion, HIV-1 incidence among CSWs, IDSWs, and police has declined between 1999 and 2002; however, the incidence has not declined in the ANC group...
  23. ncbi request reprint Unsafe injections and transmission of HIV-1 in sub-Saharan Africa
    Marc Bulterys
    Lancet 363:1650. 2004