However, in two different dose regimens, the vaccine's efficacy was 90 per cent in one and 62 per cent in the other.
Maharashtra and Punjab, which are recording a surge in new COVID-19 cases, tightened curbs on Friday and the chief minister of the western state said lockdown is an option, as India added close to 40,000 cases in the biggest daily increase in nearly four months.
Interacting with state chief ministers, Modi underscored the enormity of what he described as the world's biggest vaccination exercise, which begins from January 16, saying over 30 crore citizens will get the jabs in the next few months in India against only 2.5 crore people vaccinated so far in over 50 countries in around a month.
With final preparations underway and the vaccine set to arrive in the national capital in the next couple of days, Rohit Datta, who was the first person to be diagnosed with coronavirus infection on March 1, said "it feels surreal".
The Padma Bhushan was conferred on 17 personalities including N Chandrasekharan, chairman of Tata Sons, Krishna and Suchita Ella of Bharat Biotech, Cyrus Poonawalla, Satya Nadella, chairman of Microsoft, Sunder Pichai, chairman of Google.
'The government had a vaccine from January.' 'The government should have given the vaccine to all population above the age of 45, right from the start.' 'Each state has its own problems, but as far as vaccine coverage in India is concerned, there have been mistakes.'
'Essentially there are three things the government should be doing: Identify who you are going to get your vaccine from, figure out how you are going to pay for it, and figure out how you're going to deliver it and to whom.'
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