Bharat Biotech's Covaxin COVID-19 vaccine is found to be effective against the Brazil variant of the novel coronavirus, B.1.128.2, Indian 'double mutant' variant and the British strain.
The study conducted by scientists at the Indian Council of Medical Research (ICMR) and National Institute of Virology (NIV) claims that the two-dose regimen significantly boosted IgG antibody titer and neutralising efficacy against the Brazil variant and D614G variant as compared to that seen with natural infection, The Indian Express reported.
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India is presently using two COVID-19 vaccines -- indigenously made Covaxin and Serum Institute's Covishield. Covishield was also found to neutralise the double mutant.
Sputnik V has also been granted emergency use authorisation and rollout is expected in the next few months.
Led by NIV scientists Gajanan Sapkal, Pragya Yadav, Priya Abraham and others, the new study, published in bioRxiv on April 30, showed that Covaxin is effective against Brazil variant, the report said.
Read: Govt clarifies on vaccine orders; shares details of procurement, payment to Serum Institute, Bharat Biotech
Earlier, ICMR had said that Covaxin "successfully isolated and cultured multiple variants of concern of SARS-CoV-2 virus - B.1.1.7 (the UK variant), B.1.1.28 (Brazil variant ) and B.1.351 (South Africa variant)."
It was found to neutralise the double mutant strain as well, ICMR had said.
The B.1.617 variant of SARS-CoV2 has been found prevalent largely in Maharashtra and Delhi that have been severely hit by a devastating second wave of the pandemic.
Developed by Bharat Biotech in partnership with NIV and ICMR, Covaxin was approved for emergency use in January.
Trial results later showed the vaccine demonstrated 78 percent overall efficacy and 100 percent in severe COVID-19 cases.Click here for Moneycontrol's full coverage of the COVID-19 pandemic