One dose of Pfizer Covid-19 vaccine stimulates strong immune response: study

One dose of Pfizer Covid-19 vaccine stimulates strong immune response: study

JERUSALEM: People infected with the novel coronavirus react strongly to a dose of the Pfizer Biotech Covid 19 vaccine, regardless of whether they were infected or had antibodies to detect the disease. no. a study.
Researchers at Bar Allen University and Z Medical Center in Israel noted that there is a lack of real-world evidence regarding the Covid 19 vaccine, although clinical trial data are encouraging.
In particular, he said, the response to the Covid 19 vaccine in people infected before the SARS cov 2 2 virus is still not fully understood.
The latest study, published in the journal Euroservalence, was conducted with 514 staff members at the Zoo Medical Center.
Seventeen of the participants were infected with COVD-19 at any time between one and ten months before receiving the first dose of the vaccine.
Antibody levels of the entire group were measured prior to vaccination and then to determine the response to the BNT 162b2 mRNA vaccine developed by the American company Pfizer and its German partner Biotech.
Researchers say the response in previously infected people was so effective that it sparked a debate over whether a single dose of the vaccine might be enough.
“This discovery could help countries make informed decisions about vaccine policy – for example, whether pre-infected people should be vaccinated preferentially and, if so, with what doses.” “, Led by Professor Michael Edelston. the study.
“It also assures that not having antibodies to detect after infection does not necessarily mean that protection is lost after infection,” Edelson said.
The study also found evidence that the immune response in multinational groups was similar to that of Z Medical Center, where the study was conducted, and included staff members Jews, Arabs and Druze.
The researchers said that while members of each of these groups reacted similarly to the first dose of the vaccine, it was gratifying to learn that the virus itself also affected some groups more than others. does.
He said that regardless of the period between infection and vaccination, the strong response to a single dose of the vaccine in people who have been infected before is good news.
However, researchers insist that their findings should be verified by a large group before reaching a final conclusion.
The team continues to follow health workers to better understand how long the vaccine will protect against Covid 19 in different groups of people, even after their second dose.

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