Whether it is with an updated anti-Covid vaccine or with the same one we have already done, in any case a recall in the autumn will be made according to the target and the anti-flu strategy. The virologist Fabrizio Pregliasco, a professor at the University of Milan, is convinced of this. “The updated vaccine is already in place – says the expert at Adnkronos Health – some companies have said that it takes 100 days to have it available. The efficacy data – underlines Pregliasco – show not very big differences compared to the current one. So it will be necessary to see . I believe it is a question of product availability, production and validation because as for the flu vaccine – says the doctor – every year a simplified but still necessary procedure of reviewing and registering the efficacy is followed “. In short, we must understand “if and when there will be the availability of doses” of the new product “or if in any case – he says – in the autumn we will do what we have with the same strategy and target of the flu vaccination”.
So a fourth dose with the Wuhan virus-based vaccine? “It is possible but I would not speak of a fourth dose – replies the doctor – but of a vaccine booster which, as for tetanus, always uses the same drug”. After all, the vaccine we have “has a cross-reactivity so the effectiveness is there: 63% of avoiding infection and 93% of avoiding severe forms. And as we have seen from experiences on other vaccines – concludes the doctor – the fact of making a less close administration could give a more than good immune response “.
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