Delta variant of coronavirus is eight times less sensitive to antibodies generated by vaccines as compared to the original strain that came from China’s Wuhan, according to a new study. The study was conducted on more than 100 healthcare workers (HCWs) at three centres in India. Sir Ganga Ram Hospital (SGRH), a centre where the study was conducted found that the B.1.617.2 Delta variant not only dominates vaccine-breakthrough infections with higher respiratory viral loads compared to non-Delta infections (Ct value of 16.5 versus 19) but also generates greater transmission among the fully vaccinated HCWs. The collaborative study, “Sars-Cov-2 B.1.617.2 Delta Variant Emergence and Vaccine Breakthrough: Collaborative Study”, from India with scientists from Cambridge Institute of Therapeutic Immunology & Infectious Disease is yet to be peer-reviewed. It revealed that in vitro, the Delta variant is approximately eight-fold less sensitive to vaccine-elicited antibodies compared to Wuhan-1. Based on recent data and the dominance of new infections by this variant, the B.1.167.2 Delta variant appears more transmissible than B.1.1.7 in the UK, the study revealed. Watch the video to know more.