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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.

Coronavirus India update: State-wise total number of confirmed cases, deaths on July 17

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.

Allahabad, Mar 1: Shabista Khan, wife of suspended pediatrician Dr Kafeel Khan, fears that her husband's life is in danger.

In a letter written to the chief justice of the Allahabad High Court and senior government authorities, Shabista has sought security for her husband who is lodged in Mathura jail for allegedly delivering provocative speech during anti-CAA protest at Aligarh Muslim University.

"My husband is being mentally tortured in jail and is being subjected to inhuman behaviour," Shabista wrote in her letter to the chief justice of Allahabad High Court, additional chief secretary (home) and director general (jail), among others.

She said that she apprehended that an attempt could be made on her husband's life in jail and demanded adequate security for him.

She also demanded that her husband should be kept away from active criminals and lodged with common prisoners.

New Delhi, Jul 18: With 34,884 people testing positive for coronavirus in the last 24 hours, India's Covid-19 caseload surged to 10,38,716 while 6,53,750 patients have recovered from the disease so far, according to data by the Union Health Ministry.

The death toll due to Covid-19 rose to 26,273 with 671 fatalities reported in a day, the data updated at 8 am on Saturday showed.

At present, there are 3,58,692 active cases in the country, while 6,53,750 people have recovered so far and one has migrated.

"Around 62.94 per cent of patients have recovered so far," an official said.

The total number of confirmed cases includes foreigners.

This is the third consecutive day when the number of Covid-19 cases increased by more than 30,000.

According to the Indian Council of Medical Research (ICMR), a cumulative total of 1,34,33,742 samples have been tested for COVID-19 up to July 17 with 3,61,024 samples being tested on Friday.

Of the 671 deaths reported in the last 24 hours, 258 are from Maharashtra, 115 from Karnataka, 79 from Tamil Nadu, 42 from Andhra Pradesh, 38 from Uttar Pradesh, 26 each from West Bengal and Delhi, 17 from Gujarat, nine each from Jammu and Kashmir and Punjab, and eight each from Madhya Pradesh and Rajasthan.

Telangana has reported seven fatalities followed by Haryana with five deaths, Jharkhand, Bihar and Odisha reported four each, Assam and Puducherry have registered three each, Chhattisgarh and Goa reported two each while Kerala and Uttarakhand have registered a fatality each.

Of the total 26,273 deaths reported so far, Maharashtra accounted for the highest 11,452 fatalities followed by Delhi with 3,571 deaths, Tamil Nadu 2,315, Gujarat 2,106, Karnataka 1,147, Uttar Pradesh 1,084, West Bengal 1,049, Madhya Pradesh 697 and Rajasthan 546.

So far 534 people have died of COVID-19 in Andhra Pradesh, 403 in Telangana, 327 in Haryana, 239 in Punjab, 231 in Jammu and Kashmir, 201 in Bihar, 83 in Odisha, 51 in Uttarakhand and Assam each, 46 in Jharkhand and 38 in Kerala.

Puducherry has registered 25 deaths, Chhattisgarh 23, Goa 21, Himachal Pradesh and Chandigarh 11 each, Arunachal Pradesh and Tripura three each, Meghalaya and Dadra and Nagar Haveli and Daman and Diu two each while Ladakh has reported one fatality.

The Health Ministry stressed that more than 70 per cent of the deaths occurred due to comorbidities.

Maharashtra has reported the highest number of cases at 2,92,589 followed by Tamil Nadu at 1,60,907, Delhi at 1,20,107, Karnataka at 55,115, Gujarat at 46,430, Uttar Pradesh at 45,163 and Telangana at 42,496.

The number of Covid-19 cases has gone up to 40,646 in Andhra Pradesh, 38,011 in West Bengal, 27,789 in Rajasthan, 24,797 in Haryana, 23,589 in Bihar and 21,081 in Madhya Pradesh.

Assam has instances of 20,646 infections, Odisha 16,110 and Jammu and Kashmir 12,757 cases. Kerala has reported 11,066 novel coronavirus infections so far, while Punjab has 9,442 cases.

A total of 4,964 have been infected by the virus in Chhattisgarh, 4,921 in Jharkhand, 4,102 in Uttarakhand, 3,304 in Goa, 2,366 in Tripura, 1,832 in Puducherry, 1,800 in Manipur, 1,417 in Himachal Pradesh and 1,151 in Ladakh.

Nagaland has recorded 956 Covid-19 cases, Chandigarh 660, Arunachal Pradesh 609 and Dadra and Nagar Haveli and Daman and Diu together have reported 585 cases.

Meghalaya has reported 403 cases, Mizoram 282, Sikkim has registered 266 infections so far, while Andaman and Nicobar Islands has recorded 194 cases.

"Our figures are being reconciled with the ICMR," the ministry said, adding that 163 cases are being reassigned to states.

State-wise distribution is subject to further verification and reconciliation, it added.