from Part I - Scientific basis of pediatric HIV care
Published online by Cambridge University Press: 03 February 2010
The advent of potent antiretroviral therapy and effective prophylaxis for opportunistic infections has created a clear need for early diagnosis of HIV infection in pediatric patients and for methods of monitoring disease course and response to therapy. The field has undergone substantial progress within the past decade and innovations continue to emerge. Diagnostic issues will be addressed initially in this chapter, followed by virologic approaches for monitoring disease course and response to therapy.
Virologic assays for the diagnosis of pediatric HIV infection
Serology
Reports of the isolation of a human immunodeficiency virus (LAV; HTLV-III; later to be known as HIV-1) in 1984 [1–4] were quickly followed by the development of enzyme immunoassays (EIAs) capable of detecting a human antibody response to infection [5, 6]. It soon became clear that reactive EIAs required confirmation by Western blot to verify that the EIA-detected immune response was HIV-specific. While confirmation is essential for all EIA-reactive specimens, it is particularly important in low-risk populations where the positive predictive value of EIA is relatively low [7–10]. This issue has recently resurfaced in the context of rapid antibody tests, which can provide test results soon after the specimen is obtained at the same visit [11]. These rapid diagnostic tests can be performed in 10–30 minutes, an appealing feature for relatively non-compliant populations and for pregnant women at labor and delivery with an unknown HIV infection status.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.