1.8 ml of sodium chloride was added to the vial of Pfizer / BioNTech COVID-19 vaccine concentrate, and on December 8, 2020, the largest vaccination program in UK history was launched in London, UK, and can be administered at Guy’s Hospital. I did.
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New data from London—UK reveal how effective the coronavirus vaccine is in combating disease, even after a single dose.
Elderly people, healthcare professionals and care home staff were first vaccinated.Immediately afterwards, shots developed by a British company followed. AstraZeneca Oxford University is another vaccine that requires two doses.
Pfizer and Oxford-AstraZeneca vaccines are very effective in reducing Covid infections in people over the age of 70, according to figures in a UK public health services research paper published Monday but awaiting peer review. I showed that.
Since the study began in January, protection against symptomatological Covid four weeks after the first dose ranged from 57% to 61% with Pfizer vaccine and 60% to 73% with AstraZeneca vaccination.
Vaccine efficacy in UK public health service data is calculated using mathematical ratios.Please click Here For complete data and methodology.
With data from more than 7.5 million people, the study also showed evidence that a single dose provides additional protection against hospitalization and death.
Coronavirus cases in vaccinated individuals state that they have about half the risk of serious outcomes compared to unvaccinated cases. Combining this with estimates of efficacy for symptomatological disorders, a single dose of either vaccine is predicted to be approximately 80% effective in preventing hospitalization of the elderly approximately 3-4 weeks after the initial dose. Did.
It also suggests that a single dose of Pfizer vaccine is 85% effective in preventing Covid-19 deaths in people over the age of 80.
British Health Minister Matt Hancock called the findings “very powerful.”
“They may also help explain why Covid’s hospitalizations in intensive care units for people over the age of 80 in the UK have dropped to a single number in the past few weeks,” he said. I did.
UK policymakers feel that after deciding to postpone the second vaccination to about three months, more people have been proven to be vaccinated at a faster rate with the first vaccination. I will. US experts have been more hesitant about strategy. “There are risks on either side,” said Dr. Anthony Fauci, chief medical adviser at the White House, on Monday.
As of Sunday, 20,275,451 British were initially vaccinated and 815,816 were both vaccinated. According to government data..
The UK vaccination program is widely welcomed as a victory in the tragedy. The UK has the fifth highest number of infections in the world after the United States, India, Brazil and Russia, with nearly 4.2 million people infected, more than 123,000 dead and the fifth most dead in the world. .. According to Johns Hopkins University.
— CNBC’s Bryn Bache contributed to this article.
Clarification: This story has been updated to better reflect the calculations used for vaccine efficacy.
The chart shows how Pfizer’s vaccine works
Source link The chart shows how Pfizer’s vaccine works