The SARS-CoV-2 Vaccine Provides Cross-Protection To The Unva
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Along with vaccinated individuals, the SARS-CoV-2 vaccine also protects the unvaccinated people within the locality, according to a study published in the Nature Medicine journal. A ton of recent studies have put forth the significance of mass vaccination in controlling the spread of the deadly COVID-19 virus, by providing the necessary protection to the people receiving either one or two doses of the vaccine.

Also, a study has pointed out the effectiveness of the BNT162b vaccine from Pfizer–BioNTech in preventing not only the vaccinated but also the non-vaccinated in the community. However, it is not possible to observe this putative effect, especially during the highly fluctuating spatiotemporal epidemic changes.

An observational study was conducted by Milman O et. al wherein they evaluated the complete vaccination records as well as test results that were obtained during the mass vaccine program within a pretty large population. Following which they found that from over 177 geographically defined localities, the number of vaccines administered within each community was strongly linked with a substantial later reduction in the positivity rate among a cohort of participants belonging to the under 16 age group, who were not vaccinated.

For every 20 percentage points of people who received vaccination in any define region/locality/ community, the COVID-19 positivity rate within the unvaccinated population decreased approximately twice the number. Thus, the researchers concluded through substantial observational proof, SARS-COV2 vaccination not only protects people who have received the doses but also provides cross-protection to unvaccinated people within the community.

Source:
https://www.nature.com/articles/s41591-021-01407-5
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