The Covid-19 vaccine, if you have completed the two scheduled doses, is approximately 80% effective in protecting against infection and up to 100% in protecting against the more severe effects of the disease, for all age groups. This is demonstrated by the data processed by the National Institute of Health from the National Vaccines Registry and the integrated surveillance of cases of Sars-CoV-2 virus infection relating to the period between 21 June and 4 July. In the elaboration, the “vaccine status” of infected, hospitalized and deceased from Sars-Cov-2 was examined, and vaccination efficacy was calculated separately for four age groups, 12-39, 40-59, 60-79 and over 80.
Effectiveness around 80% against infection
As for the infection, the complete course of vaccinations has an effectiveness between 79.8% and 81.5%, depending on the age group. For ordinary hospitalizations, the effectiveness varies from 91.0% to 97.4% with the highest value in the 40-59 year range.
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Up to 100% efficacy on intensive care and deaths
For ICU admissions, the efficacy is 100% in the two younger groups (ie there was no ICU admission in the vaccinated in the period considered) and slightly drops to 96.9% in the over 80s. deaths, effectiveness is again 100% in the two younger groups, while it drops to 98.7% in the 60-79 (2 deaths among vaccinated versus 78 of unvaccinated) and 97.2% in over 80 (15 deaths in vaccinated and 62 in unvaccinated).
Brusaferro: very effective vaccines on severe forms of the disease
“These data, which confirm those of various international studies – underlines the president of the ISS Silvio Brusaferro – show that the vaccines we have available are extremely effective in preventing severe forms of the disease, if the vaccination cycle is completed, while they have a good efficacy in preventing infections ». “It is therefore necessary to accelerate the vaccination campaign as much as possible, and at the same time – he concluded – maintain the distancing and protection measures indicated by the experts until sufficient coverage is achieved”.
Rezza: third vaccine dose we don’t know when
“The third dose is in things but we do not yet know when” added the director of prevention of the Ministry of Health Gianni Rezza during the press conference on the weekly monitoring of Covid data, explaining that more data is needed. «We know that the effect of the vaccine are antibodies that last 8-9 months but we need to monitor the effect of the variants. In any case, it is not certain that it will be necessary to vaccinate every year and in any case we will start with the most fragile ».