Patanjali Ayurved Ltd has claimed to have found Covid-19 cure. Patanjali CEO Acharya Balkrishna cited results of 'clinical case studies'. Many researchers are working on a vaccine for Covid across the world. Experts have said that it would take 1-1.5 years to develop a vaccine. Covid has infected over 77 lakh worldwide, and over 3 lakh in India so far. Watch the full video for more.