CLL, COVID-19, SARS-CoV-2, Vaccination
COVID-19, vaccine, neutralization, IgG4, variant
SARS-CoV-2, seroprevalence, longitudinal cohort, community, Malawi
pseudovirus, assay, interference, integrase inhibitors
Malawi, SARS-CoV-2, neutralising antibody, longitudinal cohort
COVID-19, vaccines, elderly, primary series, BNT162b2, ChAdOx1