The weekly incidence increases nationwide with the highest rate affecting the age group of adolescents between 10 and 19 years. This is indicated by the extended weekly report of the Istituto Superiore di Sanità which integrates the monitoring of the progress of the epidemic.

The data of the ISS flow in the period 14-20 March show an increase in the incidence, equal to 784 per 100,000. The incidence at 14 days increased in all age groups. In the 10-19 age group the highest incidence rate is recorded at 14 days, equal to 2,165 per 100,000, while in the 80+ age group the lowest, 801 cases per 100,000 inhabitants.

BOOSTERS AND RISK OF DEATH - The rate of admissions to intensive care in the period from February 4 to March 6 for unvaccinated is 4 times higher than for vaccinated with a full course of less than 120 days and about 11 times higher than for vaccinated with additional dose / booster. And the death rate in the period January 28-February 27 for the unvaccinated is about 4 times higher than for vaccinated with a full cycle of less than 120 days and a full fourteen times higher than for vaccinated with an additional / booster dose.

REINFECTIONS - From 24 August 2021 to 23 March 2022, 282,654 cases of reinfection were reported, equal to 3% of the total number of cases notified. In the last week, the percentage of reinfections out of the total reported cases was 3.4%, stable compared to the previous week. The risk of reinfection starting from 6 December 2021 (beginning of the spread of the Omicron variant), marks the increased risk of reinfection in those who do not have the vaccine, in those who had had a first diagnosis for over 210 days, in those who had at least one dose over 120 days, in women.

The higher risk of reinfection for women is probably linked to the greater presence of women in the school environment where an intense screening activity is carried out and to the fact that women perform the role of caregiver in the family more often.

A higher risk also concerns the younger age groups (from 12 to 49 years) compared to people with the first diagnosis between the ages of 50-59 years for behaviors and exposures at greater risk, compared to the age groups over 60 and in health care workers compared to the rest of the population.