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A study has shown that the Pfizer and Moderna vaccines against the emerging corona virus are effective not only in preventing the disease, but also in preventing the transmission of the virus to the person vaccinated with one of them.
According to the study conducted by the American Center for Disease Control and Prevention, and its results were released today, Monday, obtaining two doses of one of the two vaccines confers 90% immunity against the infection. Previous studies had shown the ability of both vaccines to prevent disease or reduce symptoms of infection and death.
The latest study showed that the two vaccines developed using messenger RNA technology reduce the chances of the virus spreading under normal conditions. A previous study in Israel had shown that taking a single dose of Pfizer vaccine reduced the risk of infection with the virus by up to 85%.
And the Bloomberg News Agency reported that the CDC’s study included about 4,000 people from groups most vulnerable to the corona virus emerging healthcare workers, teachers and service workers during the period from mid -December to mid-March, with vaccinations being administered to citizens on a large scale.
These groups were among the first to receive vaccination, along with the elderly, as they are the most vulnerable to infection with the emerging corona virus and to be affected by its symptoms.
Study participants underwent weekly antibody testing, as well as monitoring for any symptoms they were exhibiting. The researchers compared the rate of infection with the emerging corona virus among members of those groups who are most vulnerable to infection before and after receiving the vaccination, to estimate the effectiveness of vaccines in preventing disease or prevent infection with the virus.
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