after 120 days also for the healed. Questions and answers

The over 60 e le vulnerable people will be able to receive the fourth dose from vaccine to protect yourself from the risk of getting sick covid seriously. After the authorization of the second booster by the European Center for Disease Prevention and Control (ECDC) and the European Medicines Agency (EMA), the Ministry of Health is adapting the guidelines and indications for the fourth injection. . The second booster – to be done 120 days after the third dose or after having Covid – is intended, in addition to those aged 80 and over, also to subjects between 60 and 79, and then to all for people with diseases previous years, ages 12 and up.

Fourth dose for all over 60 to 120 days from booster or infection: the circular of the ministry

THE PROPHYLAXIS

«The goal of this prophylaxis – he explains Francesco Menichetti, Professor of Infectious Diseases of the University of Pisa – is to protect people against serious illness. In any case, we recommend that you continue to follow the precautionary rules, which still remain valid. Given the high viral circulation of omicron, despite the summer period, the chances of reinfection are high ». According to a study conducted in Israel, the effectiveness of the vaccine, 7 to 30 days after the fourth dose, is estimated at 45 percent against infection and 55 percent against symptomatic infection.

Omicron 5, vaccines updated from September and recall together with anti-flu. Ema: they will protect against severe forms

68 percent against hospitalization, 62 percent against serious illness; the protection against covid death is 74 percent. “The data show that in a large population of over sixty – explains Massimo Galli, professor of infectious diseases out of office at the University of Milan – taking the fourth dose serves to reduce the risks against a variant that at the time was mainly omicron 1, with large spaces already of omicron 2, and which today is predominantly omicron 5. This vaccine – exemplifies Galli – has a bit the dimension of the war hero who has done great things, and in this moment it shows its limits and his ailments as a frontline resistance. But in any case it gives us a great defense capacity against serious illness. And this is fundamental ».

Omicron 5, do-it-yourself incubation and swabs: “50% do not declare positivity”

THE UPDATED VACCINES

The fourth dose however, it does not replace the inoculation which will then be extended to the entire population around October-November. In fact, in the autumn vaccination campaign, new updated vaccines that protect against omicron 5 will be used. Two bivalent anticovid drugs, developed by Modern e Pfizer Biontech on two sars-cov2 strains, both the Wuhan prototype and the Omicron 1 prototype.
Another vaccine, Novavax, which is based on recombinant protein S, is instead calibrated on the South African variant (beta) and on the Wuhan virus. «Our hope – he underlines Massimo Andreonidirector of Infectious Diseases of the Tor Vergata Polyclinic in Rome – is that the combination vaccine will be administered with a single dose, which we will all have to do in the autumn-winter period, and will be able to protect us better from the new variants “.