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.
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Vaccine Response
Timeframe: >21 days