EFE.- The possibility that people vaccinated with the full schedule will be hospitalized after contracting Covid-19 is reduced by more than 70% compared to those not vaccinated, according to a large study published in The Lancet.
The results released by experts in charge of the investigation “Zoe Covid” also revealed that those who test positive after being vaccinated with the two doses (post-vaccination infection) are almost twice as likely to be completely asymptomatic.
Likewise, the study indicated that the risk of contracting long-term Covid-19 (when symptoms persist 28 days after infection) is reduced by half among those vaccinated with the full regimen.
The most vulnerable people to a postvaccinal infection after receiving a dose are the “frail older adults” (over 60 years), as well as other “older adults” who have other pathologies, such as obesity or heart, kidney and lung diseases.
Across all age groups, the research noted, people living in disadvantaged areas, such as densely populated urban settings, are more likely to become infected after being vaccinated.
“We are at a critical moment in the pandemic, when there is an increase in cases worldwide due to the delta variant. Post-vaccine infections are to be expected and do not negate the fact that these vaccines are doing exactly what they were designed to do: save lives and prevent serious disease, ”explained Claire Steves, from Kings College London and co-author of the study.
The expert recalled that other research has shown that the mortality rate for hospitalized patients with Covid-19 has reached 27%, although that number can be “greatly reduced” through vaccines, “avoiding that end up in the hospital ”.
“Our findings highlight the crucial role vaccines play in efforts to prevent COVID-19 infections, which should still include other personal protection measures such as mask use, frequent testing and social distancing,” Steves added.
For this work, the researchers had the answers of a questionnaire carried out in the United Kingdom among 1.2 million adults between the last months of December and July.
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Of the total number of subjects who received at least one dose of any of the Pfizer-BioNTech, Oxford-AstraZeneca or Moderna preparations, less than 0.5% reported a postvaccinal infection detected more than 14 days after the first puncture.
Among adults who received two doses, less than 0.2% developed an infection within seven days of the second dose.
For subjects with a postvaccinal infection, the chance that the disease was asymptomatic increased by 63% after receiving one dose and by 94% after the second.
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