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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.

New Delhi, Jun 2: India on Tuesday reported 8,171 more COVID-19 cases and 204 deaths in the last 24 hours as the country's virus count inches closer to two lakh, according to the Union Ministry of Health and Family Welfare.

The total number of cases in the country now stands at 1,98,706 including 97,581 active cases, 95,527 cured/discharged/migrated and 5,598 deaths.

Cases in Maharashtra have crossed 70,000 including over 30,000 recovered while Tamil Nadu's COVID-19 tally jumped to 23,495.

Bhopal, Jul 25: Madhya Pradesh chief minister Shivraj Singh Chouhan said on Saturday he has tested positive for the coronavirus disease (Covid-19).

Chouhan made the announcement in a series of tweets.

“My dear countrymen, I had symptoms of COVID-19 and after the test, my report has come back positive. I appeal to all my colleagues that whoever came in contact with me, must get their corona test done. And my close contacts should quarantine themselves,” Chouhan said in a tweet in Hindi.

“If COVID19 is treated on time, a person is completely cured. I have been reviewing the status of corona infection every evening since March 25. I will try to review corona situation through video conferencing as much as possible now,” he added.

The chief minister said the review meeting will now be held by home minister Narottam Mishra, urban development and administration minister Bhuppendra Singh, health education minister Vishvas Sarang and health minister Dr Prabhuram Choudhary in his absence.

“I will also continue to do everything possible to help control COVID19 in the state during treatment,” he said.

One of Chouhan’s ministerial colleagues tested positive for Covid-19 late on July 22.

The chief minister along with the minister, the Bharatiya Janata Party’s state unit president VD Sharma and state unit general secretary (organisation) Suhas Bhagat had visited Lucknow in a government plane on July 21 to attend the funeral of MP governor Lalji Tandon who died away in the Uttar Pradesh capital, his hometown. during hospitalisation.

The minister is admitted to a private medical college’s teaching hospital in Bhopal.