Vaccines, Iss: “After 105-112 days from the first dose, the risk of Covid diagnosis is reduced by 80%”

The most recent data, relating to a period between 105 and 112 days from the first dose of the Covid-19 vaccine, suggest “protracted protection”. This is indicated by the second report drawn up by the ‘Covid-19 vaccine surveillance’ working group of the Istituto Superiore di Sanità (Iss) and the Ministry of Health, which updates that of last May 15 and also this result of the joint analysis of the registry data national vaccines and integrated Covid-19 surveillance.

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by Maurizio Crosetti

05 June 2021


“From 105-112 days after vaccination – reads the report – there is a further reduction in the risk of diagnosis, with a similar effect in men, women and people in different age groups”. The data confirm those found in the first report, relating to 13.7 million people vaccinated, with the risk of death dropping by 95% and the reduction in the risk of receiving a diagnosis and being hospitalized in intensive care, respectively by 80. % and 90%.

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Maurizio Crosetti

05 June 2021


The new report, referring to about 14 million people vaccinated with at least one dose, comes to an assessment over 130 days after the first dose was administered. Compared to the previous report, in the population studied there was an increase in vaccinated subjects in the age group 40 years and over and there was an increase in vaccinations with Comirnaty (Pfizer / BioNTech) and Vaxzevria (AstraZeneca) and the start of administration of the Janssen vaccine (Johnson & Johnson).

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