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Is one dose of vaccine really enough for corona recoverers?
Vaccine recovery from Corona opens this week in Israel.
While the world still insists on giving two servings to the recovering, in the country only one is given.
Is that enough to protect the vaccinated?
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Corona
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health
Thursday, 04 March 2021, 07:45
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After waiting a few months, Israel decided to include those who had recovered from Corona this week and vaccinated them in one dose.
Two new studies published in the journal The Lancet have found that Israel's method - a vaccine in just one dose of Pfizer - can cause a strong enough immune response in people who already have Covid-19 to protect them in the near future.
The first article, led by researchers from the Faculty of Public Health and University College London, included data on 51 health workers in London.
Of the workers, 24 were previously infected in Corona.
All health care workers received a first dose of Pfizer vaccine and were tested for antibodies, 19 to 29 days later.
The researchers found that in those who had a previous infection, the vaccine increased antibody levels 140-fold. "This increase appears to be significantly greater than that reported in people who have been vaccinated and have not been ill in the past," the researchers wrote in their article.
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To the full article
The second study by researchers at Imperial College London and other UK institutions included data on 72 health workers vaccinated at the end of December.
Twenty-one of them have previously been diagnosed in Corona.
Workers provided blood samples at the time of first vaccination and another sample, 21 to 25 days after vaccination.
The researchers found that people who had previously been infected with the corona virus produced stronger immune responses to a single dose of the vaccine, compared to those who had not been infected before.
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Dr. Paul Opit, director of the Center for Vaccine Education at Philadelphia Children's Hospital, told CNN that the findings in the two new studies are not surprising. When they get the first dose, they develop an impulse response, "Opit said." In other words, they act like they are getting the second dose. "
The vaccine dramatically increases the amount of antibodies.
A vaccinated man (Photo: Flash 90, David Cohen)
Although in that country only one dose of vaccine is given to recovering patients, in the US and other countries, ex-patients receive two doses. "I think the reason it did not happen was mainly programmatic," Opit said.
In the worst case, you get only when the impulse response be insulated if already infected naturally. "
He added Offit," If you've never infected with it before, the second dose of vaccine mRNA dramatically increases the immunity of the T cell and antibody response to your The
decision to vaccinate recoverers in Israel came due to concerns about the new mutations, which could produce more morbidity. In Israel, there are about 700,000 recovering from the virus, but only 400,000 of them will be eligible to receive the vaccine, after three months have passed since their recovery.
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