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New Delhi, Jul 18: The Covid-19 lockdown-led reduction in air pollution levels across five Indian cities, including Delhi and Mumbai, may have prevented about 630 premature deaths, and saved USD 690 million in health costs in the country, according to a new study.

Scientists, including those from the University of Surrey in the UK, assessed the levels of harmful fine particulate matter (PM2.5) from vehicles and other sources in five Indian cities -- Delhi, Mumbai, Kolkata, Chennai and Hyderabad -- since the beginning of the lockdown period.

The study, published in the journal Sustainable Cities and Society, compared these lockdown PM2.5 figures from 25 March up until 11 May, with those from similar periods of the preceding five years, and found that the measure reduced pollution levels in all these places.

According to the scientists, during this period, the levels of these harmful air pollutants reduced by 10 per cent in Mumbai, and by up to 54 per cent in Delhi.

"The percentage reduction for the other cities ranged from 24 to 32 per cent, which was slightly smaller than the measured values for Delhi and Mumbai," the scientists noted in the study.

"While the reduction in PM2.5 pollution may not be surprising, the size of the reduction should make us all take notice of the impact we have been having on the planet," said Prashant Kumar, a co-author of the study from the University of Surrey.

The scientists said these reductions in PM2.5 were comparable to those reported in other cities across the world, such as in Austria's capital Vienna (60 per cent), and Shanghai (42 per cent) in China.

They also calculated the monetary value of the reduced mortality due to air pollution and found that the lowered levels of PM2.5 may have saved 630 people from premature death, and USD 690 million in health costs in India.

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According to the researchers, the present lockdown situation offers observational opportunities regarding potential control systems and regulations for improved urban air quality.

They said an integrated approach might help in understanding the overall impacts of Covid-19 lockdown-style interventions and support the implementation of relevant policy frameworks.

"This is an opportunity for us all to discuss and debate what the 'new normal' should look like - particularly when it comes to the quality of the air we breathe," Kumar said.

Thiruvananthapuram, Apr 13: Three more people in Kerala tested positive for novel coronavirus disease on Monday, said Chief Minister Pinarayi Vijayan.

"With 3 new COVID-19 cases, the total number of cases in the state has reached 378," said Vijayan at a press conference.

Giving a break-up of the three confirmed COVID-19 cases, he said, "Of the 3 cases, 2 are from Kannur and 1 is from Palakkad."

He further said, "Till date, 15,683 samples tested, out of which 14,829 tested negative."

However, the total number of positive cases is decreasing, the Chief Minister added.

According to a recent update by the Ministery of Health and Family Welfare, the total number of cases in the country has reached 9352.

Jaipur, Jun 8: An inquiry has been initiated against staff of a private hospital in Rajasthan's Churu district after receiving screenshots of a purported WhatsApp chat in which they allegedly discussed about not attending to Muslim patients affected by COVID-19, police said on Sunday.

Screenshots of the chat between the hospital staff had gone viral following which an investigation has been initiated, they said.

Dr Sunil Choudhary, who runs the Srichand Baradiya Rog Nidan Kendra in Sardarshahar and whose staff purportedly wrote the messages, apologised through a Facebook post, saying the hospital staff did not have any intention to hurt any religious groups.

"We have received a complaint following which we are taking action to register FIR in the matter," Churu Superintendent of Police Tejaswini Gautam said.

Sardarshahar police station SHO Mahendra Dutt Sharma said the police control room had received a complaint regarding screenshots of the chat being circulated on social media. "We are inquiring into the matter. An FIR will be registered against the names mentioned in the WhatsApp chat," Sharma said.