Currently, Bharat Biotech’s Covaxin, Serum Institute of India marketed Covishield (also known globally as Oxford-Astrazeneca or Vaxzevria) and the Russia-made vaccine, Sputnik V are the three available vaccines in India. These COVID vaccines have received the approval nods from the government and carry a good efficacy rate that meet the WHO standards.
According to the Union health secretary Rajesh Bhushan, “Both the vaccines (Bharat Biotech’s Covaxin and Serum Institute of India marketed Covishield) being administered in India, are effective against Delta. But to what extent and what is the proportion of antibody titers produced by these vaccines will be shared soon.”
Similarly, experts have claimed that Sputnik V, which became a part of India’s vaccination drive, is effective against all variants of COVID-19 known today.