Covid vaccine, with Delta variant protection from infections drops

The protection of the vaccine from covid contagion decreases, the effectiveness against hospitalization and death from complications related to the coronavirus remains very high. This is the data reported in the full report of the weekly monitoring of the trend of the Covid-19 epidemic of the Istituto Superiore di Sanità (Iss). “The vaccine efficacy in preventing any symptomatic or asymptomatic diagnosis of Covid-19 in fully vaccinated people decreased from 89%” recorded “during the epidemic phase with the prevalent Alpha variant”, to “75% during the epidemic phase with variant Prevailing Delta “. But even with Delta “vaccination efficacy in preventing hospitalization and death remains high, in both cases at 91%, and hospitalization in intensive care (95%). The period with prevalent circulation of the Delta variant (B .1.617.2) examined in the report runs from 5 July to 31 October for diagnoses, 24 October for hospitalizations and hospitalizations in intensive care, and 10 October for deaths. “The estimated effectiveness – specifies the ISS – measures the proportional reduction in the risk of observing a certain event among people vaccinated with full cycle, or the percentage reduction in the risk of observing a certain event among people vaccinated with full cycle compared to non-vaccinated people. “The results indicate that in the phase epidemic Alpha, in the group of vaccinated with full cycle the risk of contracting the infection was reduced by about 89% compared to that among the unvaccinated, while in the Delta period there is a reduction in the risk for the vaccinated in the delta period equal to about 75% compared to the unvaccinated. While the protection data remains very high, there is a slight decrease in vaccination efficacy in the Delta epidemic phase also in relation to hospitalizations (91% Delta phase versus 95% Alpha phase), intensive care (95% versus 97% in Alpha) and deaths (91% versus 96% in the Alpha phase).