2.1. Participants
word of mouth
MAY, COVID-19 INFECTION
This study was conducted between June 2021 and May 2022. Healthy adults between the ages of 18 and 65 years, who had previously tested positive for COVID-19 as per a positive RT-PCR test, and had subsequently received the full primary series of monovalent vaccine doses were recruited via online advertisements, social media, existing list-serves, and word of mouth to participate in this study. Participants were eligible if they previously experienced asymptomatic, mild, or moderate COVID-19 infection, as defined by the National Institutes of Health (NIH) COVID-19 Treatment Guidelines, and subsequently received the full primary series of a COVID-19 vaccine at least 3 months prior to enrollment [