New English data, Preliminary, are coming to measure the effectiveness of Pfizer and AstraZeneca against the severe forms of Govit-19 disease in the elderly.
The UK is Put it online, March 1, 2021, Preliminary, but massive data on the efficacy of the Astrogeneca and Pfizer vaccines against the SARS-CoV-2 corona virus. The published document focuses on the impact of the vaccine on preventing hospitalization and death among the elderly.
Acute forms and clear effect against death
Based on 70 million people aged 70 and over who reported symptoms of Govt-19 between December 8, 2020 and February 17, 2021. This study divides the vaccinated group into an undiagnosed group.
The analysis of the results is as follows:
- Symptomatic anti-coronavirus efficacy in people over 70 years of age was 57–61% after a single dose of Pfizer, and 60–73% after a single dose of AstraZeneca;
- A single dose of Pfizer or AstraZeneca vaccine reduces the risk of hospitalization by 80% in people over 80 within 3-4 weeks;
- Pfizer’s vaccine reduces covit-19 mortality by 85% in the same population (the efficacy of astrogeneka against mortality has not yet been evaluated);
- Infections decrease after the first dose of any of these vaccines in people over 70 years of age.
« Vaccine with a single dose of BNT162b2 [Pfizer]Or ChAdOx1 [AstraZeneca] It is associated with a significant reduction in the symptomatic incidence of SARS-CoV-2 in the elderly, with even greater protection against serious diseases. Both vaccines have similar effects », Completes the document.
It should be noted that these figures are not published in a scientific journal, but are kept directly online by the British Health Institute. So the results cannot be globalized into definitive results. As such, a consistent start is beginning to emerge from studies conducted in “real life”, mainly for Pfizer, whose Israeli data (for their part, published in a scientific journal and reviewed by an independent panel) show an effectiveness of 89-91% after the first dose. So the figures are higher overall since the first injection.
The impact of asymptomatic transmission is now a blind spot. English data suggests reducing the spread by 67% of the population, but this is re-published data, one should be wary. So vaccinated people should use restraining gestures to protect others.
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