Covid update: Vaccinated person infected; China may mix vaccines; exam decision

• From a vaccinated Indian testing positive in Singapore, to more states either cancelling or postponing examinations - here are the top news updates on the Covid-19 pandemic. A 23-year-old Indian who had been given both doses of a vaccine, was found to be infected in Singapore. Maharashtra saw a dip in new cases compared to a day earlier, while Delhi's single-day surge hit an all-time high. In international news, China may mix vaccines to increase efficacy. Watch the full video for the other updates on the spread of the Sars-CoV-2 coronavirus.