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Covid-19 vaccines approved were deployed in recent months have all beenproved to be very effective by protecting against the virus. But now that the months have been adopted since the first doses have been administered, questions during which people would need additional firing to maintain them are finally responded by health experts and officials. Their decisions have beenSaved by new research This has discovered that additional doses can contribute to the safety of people with virus security, including a new study that has found a Booster Pfizer greatly protects those who are 60 years old and over.

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The latest data comes from a wide study conducted by Maccabi health services in Israel, whereThird doses of Pfizer have been available to anyone over 60 years since the end of July. A team of researchers compared the results of 149,144 people aged 60 or older who received an additional dose at least one week before the 675 630 year results of the same age group who had received only the two doses. original on January and February. The results found that thePfizer Booster was 86% effective with protection against infection and 92% effective against severe infection.

The study also found that there was37 breakthrough infections reported In those who had received the third dose, while 1,064 patients had only the two original doses reported positive tests. However, the research team did not include information on the severity of cases or specifying whether the patients in question had medical conditions that could make them more likely, Reuters reports.

"These results are very encouraging"ERAN SEGAL, a computer biologist at the Weizmann Science Institute and a key adviser to the Israeli government on the pandemic, said in a statement. "They suggest that the third booster can restore the effectiveness of vaccination at its levels of origin."

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A previous study published on August 5 was also allowed to shed light on the potentialneed to pfizer booster shots For those who are older. Leumit health researchers and the Institutional Review Card of the Shamir Medical Center in Israel have studied a group of 33,943 fully vaccinated adults who have received the vaccine against Pfizer. They broke the patients in three age groups: 60 or more, between 40 and 59 and between 18 and 39 years.

After following several months and test patients forCOVID-19 breakthrough caseThe results revealed that infections were rare among those vaccinated, with only 1.8% of patients reporting a revolutionary case. But the data showed that the chances of testing positive increased with age, noting that patients aged 60 and over were three times more likely to have advanced infection five months after receiving two doses of vaccine.

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The results of the Maccabi Health Services Study are also presented as Health Managers of the Biden Administration announced on August 18 that COVID-19Callback shots would be available For all the beginnings of the week of September 20, only one week after approving the use of a third shot of immunocompromised patients. "The available data specifies very clearly that protection against SARS-COV-2 infection begins to decrease over time after the initial doses of vaccination and in association with the domination of the Delta variant, we begin to see evidence of Reduced protection against lightness and moderate diseases, "said key health leaders in a joint statement.

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In collaboration with the announcement, the US Centers for Disease Control and Prevention (CDC) have also published three studies that it has stated that it has informed its decision, including the one that has found the efficacy rates of vaccines against Covid-19 infections globally deposited from 75 to 53. Percentage in aGreat study of retirement homes . The combined data of studies fueled arguments of some experts that boosters can not be necessary for all members of the population.

"These numbers are actually very good" Ellie Murray , an epidemiologist at the University of Boston, said The New York Times . "The only group that these data would suggest boosters for, for me, is immunocomized."

RELATED: If you have this vaccine, you can be more protected against Delta .