1.8ml of sodium chloride added to a pill of the Pfizer / BioNTech COVID-19 vaccine ready for administration at Guy’s Hospital at the start of the largest vaccine prognosis ever in UK history on December 8, 2020 in London, the United Kingdom.
Victoria Jones – Amar | Getty Images
LONDON – New data from England has shown how effective coronavirus vaccines are in fighting the disease, even after just one dose.
In December, the vaccine developed by Pfizer and BioNTech became the first image approved and distributed in the UK.
Elderly people, health workers and care home staff were the first to receive the vaccine. The bullet was soon developed by the British company AstraZeneca and Oxford University, another vaccine that requires two doses.
Fighting infection
Figures in a research paper from Public Health England, published on Monday pending a peer review, showed that the Pfizer and Oxford-AstraZeneca vaccines are highly effective in reducing Covid’s disease. among people aged 70 years or over.
Since the study began in January, protection against symptomatic Covid, four weeks after the first dose, ranged from 57% to 61% for the Pfizer vaccine and between 60% and 73% for the AstraZeneca vaccine.
Vaccine effectiveness in the data for Public Health England is measured using mathematical statistics called odds ratios, click here for the full data and procedure.
Preventing hospitals and deaths
The research, which included data from more than 7.5 million people, also provided evidence that a single dose provides additional protection against hospitalization and death.
He said the risk of adverse outcomes in coronavirus cases was about half among those who received the vaccine, compared to non – vaccinated cases. He combined this with the estimates of their effectiveness against symptomatic disease, and predicted that a single dose of each vaccine is about 80% effective in preventing hospitalization in the elderly at around three or three years. four weeks after the first dose.
They also said he recommended that a single dose of the 85f Pfizer vaccine be effective in preventing deaths with Covid-19 for those over 80.
British Health Secretary Matt Hancock called the findings “very strong.”
“They may help explain why the number of Covid admissions to intensive care units among people over 80 in the UK has fallen to single figures in the last few weeks,” he said. .
British policymakers are feeling reality after they decided to delay second doses to around three months, aiming to move more people at a faster rate with the first dose. Experts in the U.S. have become more lazy with the strategy, with White House Chief Medical Adviser Dr. Anthony Fauci saying Monday that there are “risks on both sides.”
On Sunday, 20,275,451 Britons have received their first dose of vaccine, and 815,816 have received both doses, government data say.
The UK vaccination program has been hailed as a disaster; the UK has seen the fifth highest number of diseases worldwide, after the US, India, Brazil and Russia, with nearly 4.2 million diseases and more than 123,000 deaths, the fifth death tax highest in the world, according to Johns Hopkins University.
– Bryn Bache from CBS contributed to this article.