DECRYPTION – Protection from other coronaviruses has yet to be demonstrated.
These are still just laboratory studies, but they are still a source of hope. Several studies published ten days ago show, in human cells in vitro, a common immune reaction to the Sars-CoV-2 virus of Covid-19 and other coronaviruses. If this mechanism of cross-immunity were confirmed in vivo, it would mean that exposure to winter coronaviruses, which are already circulating and are responsible for common colds, could protect, at least partially, against infection with the new virus.
“There are certain similarities in the structure of the coronaviruses, in particular in their envelope, explains Pr Éric Delaporte, infectious disease doctor at the Montpellier University Hospital. So some antigenic markers, that is, virus surface proteins, can be close and could induce cross immune reactions. ” This is what suggests a molecular biology study published on May 14 in
