Adar Poonawalla, the chief executive of Serum, said in January that the vaccine, named Corovax, was expected to be launched by June.
"It has been tested against African and UK variants of #COVID19 and has an overall efficacy of 89%," tweeted Poonawalla, whose Serum Institute is the world's largest manufacturer of vaccines.
“I have been testing myself and taking all the recommended precautions to ensure COVID is kept at bay. However, I have tested positive today following mild symptoms,” Tendulkar said on his Twitter handle.
India on Saturday reported 62,258 new infections, its highest since October, taking its tally to 11.91 million. The death toll rose by 291 to stand at 161,240.