How the vaccination campaign in Israel worked. Studio Nature
With 85% of those over 60 vaccinated, Israel has seen a 77% decline in Covid cases. Nature study on Medical Facts
Just over two months after the start of the vaccination campaign in Israel, with 85% of individuals over the age of 60 already vaccinated with two doses (February 24, 2021), there was a decline of around 77%. of cases, a 45% drop in the rate of positive tests, a 68% drop in hospitalizations, and a 67% drop in severe hospitalizations from peak values.
This was revealed by a study published in the US scientific journal Nature on April 19, conducted by a group of Israeli researchers, Eran Segal, Uri Shalit, Malka Gorfine, Tomer Meir, Smadar Shilo and Hagai Rossman, which demonstrated "the real effect of a national vaccination campaign on the dynamics of the pandemic ”through a retrospective analysis of the data of the Israeli Ministry of Health, collected between 28 August 2020 and 24 February 2021.
"We studied – explained the researchers – the temporal dynamics of the number of new Covid-19 cases and hospitalizations after the vaccination campaign, which began on December 20, 2020". What the scholars found was a greater and earlier decrease in both cases and hospitalization, among individuals over 60, followed by younger age groups, according to the order of priority of vaccination.
While many other factors besides vaccines may have influenced these findings, several observations suggest that these models are likely to be guided, to a considerable extent, by vaccines, is explained in the discussion.
First, the decrease "is greatest in individuals 60 years and older who had vaccination priority," with consecutive declines observed in the younger age groups later, according to the order of administration. Furthermore, the decline occurred "only after more than 50% of the population in a given age group had been vaccinated with the first dose or recovered." Second, a greater effect was seen in cities and areas where a large proportion of individuals were first vaccinated.
Finally, "we have not observed a similar pattern of a greater and more rapid decline in cases and hospitalizations in older individuals during the previous blockade implemented in Israel (between 18 September 2020 and 18 October 2020), in which all measures clinics had similar dynamics in all age groups ”.
(Article published on Medical Facts, here the full version)
This is a machine translation from Italian language of a post published on Start Magazine at the URL https://www.startmag.it/sanita/come-ha-funzionato-la-campagna-di-vaccinazione-in-israele-studio-nature/ on Wed, 21 Apr 2021 07:54:59 +0000.