Covid-19 infections in adults of all ages were reduced by 80% five weeks after the first dose of a Pfizer, Moderna or AstraZeneca vaccine, according to an Italian study published today.
The first such study, conducted by an EU country on the real impact of the immunization campaign, was conducted by the National Institutes of Health. Italy (ISS) and the Ministry of Health in a sample of 13.7 million people who had vaccinateacross the country.
Scientists have been studying the data since the start of Italy’s vaccination campaign on December 27, 2020, until May 3, 2021.
The analysis showed that the risk of a SARS-CoV-2 infection, hospitalization and death was gradually reduced after the first two weeks after the initial vaccination.
“From 35 days after the first dose, there is an 80% reduction in infections, a 90% reduction in hospitalizations and a 95% reduction in deaths,” the ISS said, adding that the same pattern is seen in both men and women regardless of age.
“These data confirm the effectiveness of the vaccination campaign and the need to achieve high population coverage soon in order to end the state of emergency,” ISS President Silvio Brussefero said in a statement.
Of the nearly 14 million people included in the Italian study, 95% of those who had received the Pfizer and Moderna vaccines had completed the vaccination cycle, and none of those who had received the AstraZeneca vaccine had received a second dose.
By this morning, about 8.3 million Italians, or 14% of the population, had been fully vaccinated, while about 10 million had received a first dose.
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