COVID-19 vaccines, developed by Bharat Biotech, Serum Institute of India and Pfizer, are under active consideration of India's drug regulator and there is hope that early licensure is possible for all or any of them.Let's take a look at how states and UTs are preparing to administer Covid-19 vaccine doses:KeralaCovid-19 vaccine will be made available free of cost to all people in Kerala, Chief Minister Pinarayi Vijayan said. "No one will be charged for the vaccine.