The findings were published yesterday by the Israeli Ministry of Health and concluded that a booster dose of the Pfizer-BioNTech vaccine significantly improves protection from infections and serious illness among people over the age of 60. The data obtained in the research tends to strengthen the push for the implementation of a third dose of the vaccine, which aims at greater protection in elderly and immunosuppressed people.
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Third dose Pfizer, the Israeli study
The conclusions of the scientific investigation show how, among people aged 60 and over, the booster dose gave four times greater protection from Covid after ten days of taking, compared to those who had been vaccinated with two doses. The findings were published by Reuters and follow other research showing that the third dose also offered five to six times stronger protection against hospitalization or serious illness after 10 days of taking.
Despite having one of the largest vaccine rates in the world, Israel has recently seen a very high resurgence of Covid infections, largely due to the high contagiousness of the Delta variant. However, experts have found that the vast majority of people who have fallen ill are not vaccinated, the Times of Israel reported. Dr Sharon Alroy-Preis, head of Israel’s public health services, said last week: «There is a cautious optimism and we see a brake on the serious spread». And anyway, Israel has already vaccinated 1.5 million people out of a population of 9.3 million with the third dose. According to Bloomberg, about 60% of the country’s population has received at least two doses of the vaccine.
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Delta variant
When the Delta variant began spreading in the country last month, the data showed that vaccines were significantly less effective in preventing infections from this type of variant. Pfizer was only 39% effective against infection, and 41% for the one with more obvious symptoms. Although the vaccine still provided solid 91% protection against serious illness, there were concerns about decreased immunity among the elderly and immunosuppressed. And so on July 30, Israel began giving the third dose to people over the age of 60. Last week, it lowered to 40, also including pregnant women, teachers, and health care workers below that age. The country began the new vaccination five months earlier than the average of the other states. The United States, Canada, France and Germany are also considering whether to proceed in the same way. Open debate, with the usual aftermath of controversy, in Italy, where we begin to talk about the third dose, although from the WHO comes the indication for everyone to vaccinate first those who have not yet received any immunization.
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