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Covishield 63% effective overall, 81% against severe illness: Study SECTIONS Share Synopsis Despite Delta’s ability to reduce humoral/antibody-led immune response, the cell-mediated immunity - immunity driven by T cells at sites of infection - was still well preserved and could add to vaccine effectiveness, the study conducted by leading Indian researchers from top scientific institutions showed. ET Bureau Covishield has shown 63% vaccine efficacy overall and 81% in preventing severe Covid-19 infections in fully vaccinated people, according to the first such Indian study on its efficacy amid the virulent Delta-led second wave. Despite Delta’s ability to reduce humoral/antibody-led immune response, the cell-mediated immunity - immunity driven by T cells at sites of infection - was still well preserved and could add to vaccine effectiveness, the study conducted by leading Indian researchers from top scientific institutions showed.

United kingdomTranslational health scienceNational institute of immunologyTechnology instituteInstitute of genomicsSerum institute of indiaIndia consortium for covidSerum instituteIntegrative biologyNational instituteIndia consortiumCellular immune responsesEffectiveness against infectionVariant despite reduced virusஒன்றுபட்டது கிஂக்டம்மொழிபெயர்ப்பு ஆரோக்கியம் அறிவியல்