Covid, a study confirms: two doses of vaccine are needed against Delta

Two doses of Covid-19 vaccines effectively fight the delta variant, while one administration is not enough. This information, already anticipated in recent days, is today confirmed and presented in a publication in the prestigious magazine The New England Journal of Medicine (Nejm). The research, conducted by various British institutions, including the University of Oxford, shows – data in hand – that with the recall we are protected and on the contrary a single dose of the vaccine protects us too little from the delta.