![]() ![]() Methods: A serological analysis to measure SARS-CoV-2 immunoglobulin (Ig)G, IgA, and neutralizing antibodies was performed on individuals who received one or two doses of either BNT162b2 or ChAdOx1 vaccines in Kuwait. Objective: We aimed to study the association between previous COVID-19 infection and antibody levels after COVID-19 vaccination. Individuals with previous COVID-19 infection may not have been prioritized due to existing humoral immunity. Background: The emergence of new COVID-19 variants of concern coupled with a global inequity in vaccine access and distribution has prompted many public health authorities to circumvent the vaccine shortages by altering vaccination protocols and prioritizing persons at high risk.
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