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According to a new Israeli study, widespread vaccination of adults helps protect uninfected children.


New data from Israel, which had Fastest Covid-19 Vaccine Rollout In the world, real-world evidence provides that widespread vaccination against the coronavirus can protect even those who are unvaccinated.

israeli studies, which was published Thursday in the journal Nature Medicine took advantage of the fact that until recently Israel was vaccinated only to people 16 or older. The researchers found that for every 20 percent increase in the share of 16 to 50-year-olds who were vaccinated in a community, the researchers found that the share of unvaccinated people under 16 who tested positive for the virus Fell in half.

“Vaccination provides benefits not only to the individual vaccine but also to the people around them,” said Roy Kishni, a biologist, physicist and data scientist who studies microbial evolution and disease at the Technion-Israel Institute of Technology. Dr. Kishoni led the research with Dr. Tal Petalon, who heads the Maccabi Research and Innovation Center at KSM, Israel. The paper’s first authors are Oren Millman and Idan Yellin, who are Dr. Kishoni’s laboratory researcher.

Israel began vaccinating adults in December last year. Within nine weeks, it had vaccinated nearly half of its population.

Researchers examined anonymized electronic health records of members of Maccabi Healthcare Services, an Israeli HMO. They analyzed vaccination records and virus test results between December 6, 2020 and March 9, 2021. The records came from 177 different geographic regions, which varied. Vaccination and vaccination rates.

For each community, they calculated the share of adults aged 16 to 50 who were vaccinated at different time points. They also calculated the fraction of PCR tests of children below the age of 16 who came back positive.

They found a clear correlation: As more and more adults in a community were vaccinated, the share of children who tested positive for the virus subsequently fell.

People who are vaccinated are much less likely to be infected with the virus. research also gives suggestions that even when vaccinated people contract the virus, they may still have a low viral load, reducing their infectivity. As a result, as more and more people are vaccinated, the chances of uninfected people coming into contact with infected, infectious people decrease.

“The results are consistent with vaccines not only getting sick themselves, but not transmitting the virus to others,” Dr. Kishoni said. “Such effects can be amplified over multiple cycles of infection.”

In a more recent paper, which has not yet been published in a scientific journal, researchers in Finland reported that after vaccination of health care workers, unvaccinated members of their households were also less likely to contract the virus.



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