COVID-19 Clinical Trial
Official title:
Should COVID-19 Quantitative Antibody Titers be Implemented to Guide COVID-19 Booster Vaccinations Regardless of HIV Status, Immunosuppression, or Age?
This is an observational study aiming at describing COVID-19 vaccination outcomes among HIV-positive and HIV-negative individuals, using electronic health records to observe their usual clinical care. This study will describe levels of COVID-19 vaccine response (i.e., Ig spike antibody measurements). Rates of antibody level decay after vaccination will be assessed. The efficacy of using antibody levels to help guide the timing of booster doses among HIV-negative and HIV-positive patients will be evaluated.
The aim of this study is to assess levels of COVID-19 vaccine response through measuring surrogate Ig spike antibody measurements, to determine the rates of antibody level decay after vaccination, and to measure the efficacy of utilizing these antibody measurements to help guide the timing of booster doses among HIV-negative and HIV-positive patients. The study population will include adults who were fully vaccinated against SARS-CoV-2 virus (i.e., two doses of Pfizer or Moderna vaccines or one dose of the J&J vaccine), and have received a Roche SARS-CoV-2 Semi-Quant Spike Ig Ab test at least 3 weeks after full vaccination as part of their usual clinical care at AHF Midtown Manhattan Healthcare Center. Incidence rates of COVID vaccine response levels (i.e., adequate, low, non-response) will be estimated using univariate Poisson regression, overall and by vaccine type. Among individuals with at least two antibody measurements, rates of antibody levels decay will be estimated using univariate linear regression, overall and stratified by HIV status, vaccine type and baseline CD4 cell count. In the sub-population of individuals who received a COVID vaccine booster, vaccination and antibody response will be characterized at least 3 weeks after the booster is received. Univariate linear regression will be used to estimate rates of antibody levels decay, among individuals with at least two antibody measurements, including one after the booster dose. Rates of response decay will be produced overall, and stratified by HIV status, booster type and baseline CD4 cell count. ;
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