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India, which has been reporting the highest number of coronavirus cases in the world since August, took 230 days to hit the 50-lakh mark with the country recording more than 90,000 new cases every day for the past week, barring Tuesday.
Maharashtra remains the worst affected state by the pandemic with a tally of 10.7 lakh cases as it reported more than 17,000 new cases again.
Close to half (48.8 per cent) of the active cases are concentrated in three states -- Maharashtra, Karnataka and Andhra Pradesh. Uttar Pradesh, Tamil Nadu, Chhattisgarh, Odisha, Kerala and Telangana contribute close to a quarter (24.4 per cent) of the active cases, the ministry said.
More than 37 per cent of cumulative deaths reported so far in the country are from Maharashtra. The state reported 34.44 per cent of the deaths in the last 24 hours, the ministry said on Tuesday.
Karnataka reported more than 8,200 new cases, most of them from its capital. Bengaluru now has more Covid cases than Mumbai, surpassed only by Delhi and Pune.
Delhi's COVID-19 tally mounted to over 2.25 lakh after 4,263 fresh cases were reported on Tuesday. Thirty-six fatalities pushed the death count to 4,806, according to the latest bulletin issued by the Delhi health department.
A sero-prevalance survey conducted in Delhi in the first week of August has found that 30 per cent, or 79 of the 257, people who recovered from COVID-19 did not have antibodies against the virus, making them vulnerable to re-infection.
Worldwide, almost 3 crore people have been infected by SARS-CoV-2, and more than 9.23 lakh people have lost their lives to the pandemic since it surfaced in China late last year.
In terms of recoveries, India is in the pole position, followed by Brazil and the US, according to the Johns Hopkins University which has been compiling COVID-19 data from all over the world.
India is the second worst-hit nation in terms of COVID-19 cases after the US. It is in the third spot in fatalities after the US and Brazil, according to Johns Hopkins University data.