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Covaxin Effectively Neutralises Both Alpha, Delta Variants of Covid-19: US’ Top Health Institute

Author : Odisha Today Bureau | Posted on: 2021-06-30

The National Institute of Health (NIH) in the United States has found that Bharat Biotech's Covaxin vaccine generates antibodies that effectively neutralize both Alpha and Delta variants of Covid-19.

 

The top health research institute said that an adjuvant developed with funding from the NIH has contributed to the success of the "highly efficacious" Covaxin Covid-19 vaccine, which roughly 25 million people have received to date in India and elsewhere.

 

"Results from two studies of blood serum from people who had received Covaxin suggest that the vaccine generates antibodies that effectively neutralize the B.1.1.7 (Alpha) and B.1.617 (Delta) variants of SARS-CoV-2, first identified in the United Kingdom and India, respectively," NIH said in a statement.

 

The adjuvant used in Covaxin, Alhydroxiquim-II, was discovered and tested in the laboratory by the biotech company ViroVax LLC of Lawrence, Kansas with support exclusively from the NIAID Adjuvant Development Program, NIH said. The adjuvant comprises a small molecule attached in a unique way to Alhydrogel, a substance frequently called alum that is the most commonly used adjuvant in vaccines for people.

 

"Ending a global pandemic requires a global response," said Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), a part of NIH. "I am pleased that a novel vaccine adjuvant developed in the United States with NIAID support is part of an efficacious Covid vaccine available to people in India."

 

Covaxin comprises a disabled form of SARS-CoV-2 that cannot replicate but still stimulates the immune system to make antibodies against the virus. Published results from a Phase 2 trial of the vaccine indicate that it is safe and well-tolerated.

 

 Unpublished interim results from the Phase 3 trial indicate that the vaccine has 78 per cent efficacy against symptomatic disease, 100 per cent efficacy against severe Covid-19, including hospitalization, and 70 per cent efficacy against asymptomatic infection with SARS-CoV-2, the virus that causes Covid-19.

 

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