From India reaching the vaccination milestone to the US intensifying probe for virus source, here are the top updates on coronavirus. India cumulatively administered over 20 crore vaccines so far, becoming the second country to do so after the USA. Meanwhile, ICMR said it would conduct a survey to examine the effectiveness of Covishield and Covaxin. Around 4,000 people above 45 years of age to be reviewed, as per ICMR’s scientist. Also, a Lancet panel gave eight suggestions to India over Covid-19 handling. Watch the full video for more updates on the pandemic.