Covaxin, the Indian Vaccine for COVID-19 uses a traditional technique for vaccine development

 

https://www.bharatbiotech.com/covaxin.html

"U.S. biopharmaceutical firm Ocugen and Bharat Biotech have signed a binding letter of intent (LOI) to co-develop India’s COVID-19 vaccine candidate Covaxin for the United States market.....

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Covaxin offers a vaccine candidate that is different from other options currently available in the U.S. market with potentially broader coverage against multiple protein antigens of the virus,” said Harvey Rubin of the University of Pennsylvania and a member of Ocugen’s Vaccine Scientific Advisory Board."

The above extracted from:

https://www.thehindu.com/business/bharat-biotech-ocugen-to-take-covaxin-to-us/article33397081.ece