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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.

Alappuzha, Apr 5: Coming to the rescue of a toddler in need of crucial treatment for cancer, the Kerala health department scrambled its resources for transporting a toddler from here to Hyderabad on Sunday.

In a co-ordinated action, the department arranged for an ambulance and necessary travel permits for the nearly 16-hour 1,100 km inter-state journey that started at 7.15 am from Cherthala in this district with the entire cost to be borne by the state government.

Health Minister K K Shailaja on Saturday said all steps have been taken to facilitate the travel of the toddler and her family members to Hyderabad after local media reports highlighted the plight of the child.

The state Chief Secretary had discussed the matter with his counterparts of other states en route to ensure a smooth journey,the Health Ministry said.

"The travel permit and directions to other states through which the ambulance has to pass were issued from the police headquarters. All district police chiefs were given instructions from the headquarters to arrange for passage of the ambulance," it said in a release.

The journey started at 7.15 am and they are expected to reach Hyderabad at 11 pm.

"The state government will bear the expenses incurred for the journey. The ambulance will remain in Hyderabad and will return with the family," it said.

The first phase of treatment was done at the L V Prasad Hospital in Hyderabad and the family was supposed to travel again within 21 days for the next phase of treatment.

As the family could not undertake the journey in view of the nation-wide lockdown to check coronavirus scare, the state government swung into action to help the child.

The number of confirmed novel coronavirus cases in the country climbed to 3,374 on Sunday while the death toll rose to 77, according to Union Health Ministry data.