COVID-19: Epidemiological Study of the Spread of SARS-CoV-2 in the Household of a Person Who Has Had a COVID-19 Disease

"* The rapid test is performed using a drop of blood obtained at the fingertip (10 microliters) using a lancet.~* The dropper pipette, held vertically, collects the drop of whole blood up to the sample line~* Place 1 drop of whole blood (10 μL in the sample well (S) of the cassette.~* Immediately add 2 drops (80μL) of buffer to the well (B) of the cassette.~* Avoid air bubbles; if there is an air bubble, add a 3rd drop of buffer.~The reading is taken after 10 minutes at most by the healthcare professional under medical supervision.~In case of sepositivity of the rapid test, it may be offered to index cases and adult contacts, a blood sample of 5 ml of blood for a serothèque allowing a characterization of the antibodies and in particular of the neutralizing antibodies."