You May Have Antibodies After #Coronavirus Infection. But Not for Long. - The New York Times
It’s a question that has haunted scientists since the pandemic began: Does everyone infected with the virus produce antibodies — and if so, how long do they last?
Not very long, suggests a new study published Thursday in Nature Medicine. Antibodies — protective proteins made in response to an infection — may last only two to three months, especially in people who never showed symptoms while they were infected.
The conclusion does not necessarily mean that these people can be infected a second time, several experts cautioned. Even low levels of powerful neutralizing antibodies may still be protective, as are the immune system’s T cells and B cells.
But the results offer a strong note of caution against the idea of “immunity certificates” for people who have recovered from the illness, the authors suggested.
Coronavirus : pour les malades sans symptômes, l’#immunité [humorale] face au #Covid-19 pourrait être plus faible - Sud Ouest.fr
Huit semaines après la sortie de l’hôpital, les niveaux d’#anticorps neutralisants, qui confèrent a priori une immunité contre le virus, avaient diminué chez 81,1% des patients sans symptômes, contre 62,2% chez les patients symptomatiques.