Antibody response in a family with COVID-19.

Background: Robust serological assays for SARS-CoV-2 are essential for determining prior infection and the suitability of donated convalescent plasma for plasma therapy. We compared two in-house and three commercial serological assays in a family cohort with SARS-CoV-2-infected members.

Case Presentation: Three individuals in a family of five developed COVID-19 confirmed by PCR, following a trip abroad.