The booster, i.e. the third dose (fourth for fragile subjects) of the Covid vaccine remains essential. The last one extended report weekly of the Higher Institute of Health on the progress of the pandemic certifies how the effectiveness of the protection in recent months, i.e. in the period of prevalence of Omicron and its sub-variants, was 70% in vaccinated with a complete cycle for less than 90 days And 88% in vaccinated with boosters. Of course, we always talk about efficacy against serious illness. On the contrary, that in preventing the diagnosis of Covid infection, that is towards contagion, was lower: by 44% within 90 days of the completion of the vaccination cycle, by 34% between 91 and 120 days, and by 46% more than 120 days after the completion of the vaccination course o equal to 58% in those who had the recall.
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While the incidence of infections decreases in all age groups, the median age at admission and admission to intensive care risesthe ISS also reports that from 24 August 2021 to 18 May 2022 – therefore in the last 9 months – nearly 500 thousand cases of reinfection, to be precise 489.414. They are largely reinfections related toextreme contagiousness of Omicron and of the different sub-lineagesgiven that from the spread of this variant the risk of recontactment is increased by 18 times compared to what was raced with Delta in particular – explains an ISS investigation published in the magazine Eurosurveillance and based on nearly 8.5 million cases and nearly 250,000 reinfections – precisely among those who are not vaccinated, among young people under 40 and health workers.
Those most at risk of reinfection
On the whole they are more prone to reinfection women (by 1.2 times), the people you are vaccinated for over 120 daysas mentioned i young people between 20 and 39 years old (by 1.2 times compared to the 40-59 range) and the health workers (1.9 times). Obviously, the unvaccinated are at greater risk of reinfection than those vaccinated with at least one dose for less than 4 months (by 2.9 times). On the contrary, thanks to the extensive vaccination coverage, the risk is lower in the elderly. Over the past week, reinfections have made up the 6% of reported casesstable compared to the previous week – when, however, it had increased from 5% of the previous one.
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Source: Vanity Fair
