After one shot with the AstraZeneca vaccine, a person is 76 percent protected against the corona virus for up to three months. The chance of infecting someone else is 67 percent less than someone who has not been vaccinated. This is shown in an as yet unpublished study in the renowned British medical journal The Lancet, reports Sky News Tuesday.
After the second dose, the vaccine’s efficacy is 82.4 percent, the University of Oxford researchers write. In people who received the second shot after six weeks, that protection was 54.9 percent.
In the United Kingdom, it is currently being investigated whether the second injection can be delayed until three months after the first dose.
Two large studies show that the AstraZeneca vaccine protects 60 percent of people 18 years or older from the disease after being infected with the virus. This means that 40 out of 100 people who would get COVID-19 without the vaccine will also become ill after vaccination. The vaccine offers people who do become ill 85 percent protection against the most serious symptoms that require them to go to hospital (or worse).
Because most of the participants in the studies on the AstraZeneca vaccine were younger, there is still little evidence of its effect in people over 55.
The AstraZeneca vaccine was released in the European Union last Friday. The United Kingdom was the first country to approve the AstraZeneca vaccine in December. The drug is already being injected into the British population.
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