Increase the gap between two doses of Serum Institute of India's Oxford Covid-19 vaccine 'Covishield' to 12-16 weeks, a government panel has recommended. Currently, the interval between two doses of Covishield is four to eight weeks. As the second wave of Covid-19 continues to grip the nation and the confusion over vaccine doses gap worries citizens, top doctors answer all your FAQs. For more, watch the full video.