Covid, the Swedish discovery: those who recover and get vaccinated have more antibodies in their nose than in their blood

How do Covid antibodies move in the body of those who have contracted the infection? And how do they reposition themselves after vaccination? It is not at all true that their level in the blood corresponds to that which, at the same time, can be found in the airways, for example in the nose.

This is testified by the study of the Karolinska Institutet in Sweden published in the journal JCI Insight.