As for the total number of positive cases among the vaccinated, the data updated as of April 30 – later the CDC decided to record only the cases of hospitalization – show a total of 10,262 “breakthrough” cases in which Covid has “punctured” the vaccine defenses. At the peak of the epidemic in January 2021, the daily infections were over 200 thousand per day, therefore the cases of Covid among the vaccinated are a minimal fraction. The CDC acknowledges that the data could be underestimated because many vaccinated people, especially if asymptomatic, do not undergo testing. But the drastic reduction of infections is a fact.
In California only 62 deaths among the immunized
Among the American states, California confirms the national trend. In fact, there are only 7,550 positives out of more than 19.5 million fully vaccinated Californians. Infections among those who completed the immunization cycle up to 23 June amounted to 0.039%, equal to one case for every 2,583 people vaccinated. Most infections were mild, while deaths among the immunized were only 62 according to data from the California Department of Public Health.
Ontario: only 0.02% of infections among the vaccinated
Another very in-depth study is that carried out by the Canadian state of Ontario. From the start of the COVID-19 vaccination program on December 14, 2020 and through June 12, 2021, 9.4 million citizens of the state of Toronto have received at least one dose. Of these, only 0.15% (14,293 individuals between symptomatic and asymptomatic cases) became infected when they were partially vaccinated and only 0.02% (1,648 people) became infected when fully vaccinated.
Most (53.1%) of identified post-vaccination cases were not yet protected when they contracted the infection, as the date of onset of symptoms was between 0 and 14 days after the first dose was given. post-vaccination cases decreases dramatically with the passage of time. A marked decrease in infections is observed starting from 28 days after the first dose and even more after the second.
Data from Lombardy
The partial data from the Italian regions also confirm the picture already analyzed in North America. Let’s take Lombardy: according to a report by the DG Welfare, in the period from January to June, 87.2% of those infected were not vaccinated; he was vaccinated with the first dose for 8.1% and full course for 4.7%. «In any case – concludes the document of the Region – vaccination coverage drastically reduces the risk of contagion and in any case the possible development of the disease in a serious form. In particular, after the completion of the vaccination cycle and after 14 days from the second and last administration, the response to the vaccine is almost the same for all variants “.