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March 24th, 2021:The Pfizer Coronavirus vaccine is moderately less effective against the South African variant, but neutralizes the British variant and the original SARS-CoV-2 strain very well, according to a new vaccine study conducted by Ben-Gurion University of the Negev scientists.
Their findings were published this week in the prestigious journal Cell Host & Microbe.
The scientists looked at the effectiveness of the vaccine against the original viral strain, the British and the South African variants, as well as strains that harbor combined changes in the viral spike. They are continuing to test other circulating variants as they constantly emerge with the hope to identify potentially risky mutations that can compromise the vaccine. Their findings indicate that the Pfizer vaccine is effective against the original SARS-CoV-2 strain and the British variant, but provides weakened protection against the South African variant and the combined British-South African variants.
“Our findings show that future variants could necessitate a modified vaccine as the virus mutates to increase its infectivity,” says principal investigator Prof. Ran Taube of the Shraga Segal Department of Microbiology, Immunology and Genetics in the Faculty of Health Sciences.
Prof. Taube and his team also compared neutralizing antibody levels following administration of one and two doses of the vaccine, as opposed to levels in patients that have recovered from Covid-19. They found that vaccination provided optimal levels of protection, when compared to the lower levels of protection that were observed in recovered patients.
Additional researchers include first author Alona Kuzmina, a research investigator in Prof. Taube’s lab, and collaborating investigators from Soroka University Medical Center in Beer-Sheva - Yara Khalaila, Olga Voloshin, Ayelet Keren-Naus, LioraBohehem, Yael Raviv, Prof. YonatShemer-Avni, and Dr. Elli Rosenberg.
This study was supported by the Israel Ministry of Science and Technology grant no. 3-16897, the Israel Science Foundation grant application no. 755/17 and the BGU Covid-19 Research Taskforce.
About Ben-Gurion University of the Negev
Ben-Gurion University of the Negev (BGU) is the fastest growing research university in Israel. With 20,000 students, 4,000 staff and faculty members, and three campuses in Beer-Sheva, SdeBoker and Eilat, BGU is an agent of change, fulfilling the vision of David Ben-Gurion, Israel’s legendary first prime minister, who envisaged the future of Israel emerging from the Negev. The University is at the heart of Beer-Sheva's transformation into an innovation district, where leading multinational corporations and start-ups eagerly leverage BGU’s expertise to generate innovative R&D.
BGU effects change, locally, regionally and internationally. With faculties in Engineering Sciences; Health Sciences; Natural Sciences; Humanities and Social Sciences; Business and Management; and Desert Studies, the University is a recognized national and global leader in many fields, actively encouraging multi-disciplinary collaborations with government and industry, and nurturing entrepreneurship and innovation in all its forms.
BGU is also a university with a conscience, active both on the frontiers of science and in the community. Over a third of our students participate in one of the world's most developed community action programs.
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