He said 95 percent of individuals appear to seroconvert following the Sinopharm/BBIBP-CorV vaccine, and the vaccine appears to induce similar levels of ACE2 receptor blocking antibodies and RBD binding antibodies to B.1.617.2 as seen following natural infection.
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“This vaccine was found very effective for the Delta variant as well. The antibody responses to delta variant and neutralizing antibodies, were similar to levels seen following natural infection,” it said.
The research team included scientists from the Allergy, Immunology and Cell Biology Unit, Department of Immunology Molecular and Molecular Medicine, including Prof. Neelika Malavige, Dr. Chandima Jeewandara, Colombo Municipality Council and included researchers from University of Oxford including Prof. Graham Ogg and Prof. Alain Townsend. The funding for this study was provided by the World Health Organization, UK Medical Research Council and the Foreign and Commonwealth Office and the Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Science (CIFMS), China.