“Even with 80% vaccinated in September no herd immunity”

by time news

Was the goal of 80% of over 12 vaccinated against Covid by 30 September missed? “In any case we would not have had herd immunity” in the full sense of the word. “Only if we were to go above 90% of the generalized population “, including children,” covered with the vaccine, then maybe we would come to an extinction of the Sars-CoV-2 virus. But without that no. And I don’t think we will reach these values. “The virologist explains it to time.news Salute. Fabrizio Pregliasco.

“The goal set by Commissioner Figliuolo has been close to”, considering the over 12s as a whole, argues the expert from the University of Milan. “But whereas the coronavirus in itself does not guarantee long-term immunity even to the healed will not be able to achieve herd immunity intended as a result of the theoretical model of high coverage. Among other things, the Delta variant has already moved the R0 contagion index from 2.5 to 7, so it has a greater contagion capacity. This means that higher levels of coverage must be achieved, reaching 80-90% “of the entire population.

In addition, to date a significant share of the people most affected by the Delta variant, which are the very young, is not fully covered by the vaccine. We add the doubts “of some” regarding the desire to vaccinate the youngest as a result of inconsistencies and absurd fears regarding the vaccine and the picture is complete “. What we will see, however, concludes Pregliasco, “is undoubtedly the achievement of a coverage objective. Herd immunity understood as herd immunity of the category from 16 to 150 years old is presumed to be obtained, but in fact the virus The vaccine is essential to achieve what can be defined as ‘civil coexistence’ “with Sars-CoV-2. “However, it will also be necessary to vaccinate the youngest ones. Fortunately, this is a possible goal at least from the age of 12 onwards. Let’s see if it will succeed”.

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