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Infection with the coronavirus generates a very strong immune response, characterized by the production of several neutralizing antibodies that specifically target a protein present in the outer layer (spicules) of the virus. Since this protein (called protein S) is essential for the virus to enter and reproduce inside our cells, these antibodies therefore help prevent infection at the source and the development of COVID-19. This S protein can therefore be considered the Achilles heel of the coronavirus and it is for this reason that all vaccines currently available or in development are based on the production of antibodies against this protein. Download the column