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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, Apr 23: Congress president Sonia Gandhi on Thursday accused the BJP of spreading the virus of communal prejudice and hatred in the country, asserting that "grave damage" is being done to social harmony

Addressing a meeting of the Congress Working Committee, Gandhi said it should worry every Indian and her party will have to work hard to repair this damage.

"Let me also share with you something that should worry each and every one of us as Indians. When we should be tackling the coronavirus unitedly, the BJP continues to spread the virus of communal prejudice and hatred," she said.

"Grave damage is being done to our social harmony. Our party, we will have to work hard to repair that damage," the Congress president added

Former prime minister Manmohan Singh, former Congress president Rahul Gandhi and top Congress leaders attended the meeting through video conference

This is the second time the CWC, the Congress' top decision-making body, is meeting through video-conferencing in the past three weeks ever since the lockdown was enforced to contain the coronavirus threat.

The Congress president said the coronavirus pandemic has increased disturbingly in the past three weeks and called upon the government to increase testing for it

Gandhi said she has written several times to the prime minister since the lockdown was enforced and suggested several measures and constructive cooperation

"Unfortunately, they have been acted upon only partially and in a miserly way. The compassion, large-heartedness and alacrity that should be forthcoming from the central government is conspicuous by its absence," she said

The Congress chief said the focus of the party must continue to be on successfully engaging with health, food security and livelihood issues.

She claimed that around 12 crore people have lost jobs in the first phase of the lockdown and urged the government to provide a relief package for the MSME sector, which accounts for one-third of the GDP

Gandhi called upon the government to provide food and financial security to migrants and jobless stranded at various places and were desperate to reach back home

"We have repeatedly urged PM there is no alternative to testing, tracing and quarantine. Unfortunately, testing still remains low, testing kits still in short supply," she noted

Gandhi said trade, commerce and industry have come to a virtual halt and crores of livelihoods have been destroyed.

"The central government does not appear to have a clear idea on how the situation will be managed after May 3rd. A lockdown of the present nature after that date would be even more devastating," she said

Former prime minister Manmohan said the success of the lockdown will be judged finally on India's ability to tackle COVID-19

He also said the cooperation between the Centre and states was key to success of the country's fight against coronavirus

Singh said it is necessary to focus on a number of issues in the fight against coronavirus

The fight against COVID-19 would very much depend upon the availability of resources, he noted

Rajasthan chief minister Ashok Gehlot said unless the central government comes forward to financially help states, the fight against COVID-19 will get weakened

"Unless there is a big financial package for states, how will normalcy return to states post lockdown," he asked

Chhattisgarh chief minister Bhupesh Baghel said unless the Centre rises to the occasion and provides financial assistance to states, how will the fight against COVID-19 be won

Puducherry chief minister V Narayanasamy said the Union government has not given any assistance to the states

"How will states survive in times of crisis. We are not enemies but have to act and work together," Narayanasamy said at the CWC meet.