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New Delhi, Feb 1: Air India's jumbo B747 plane, evacuating 324 Indian nationals from the novel coronavirus-hit Wuhan in China, landed here on Saturday morning, officials said.

The plane reached Delhi around 7.30 am, they said.

There were five doctors from Ram Manohar Lohia (RML) Hospital and one paramedical staff on board, said an Air India spokesperson.

The Indian Army has set up a quarantine facility in Manesar near Delhi to keep those evacuated from China's Hubei province.

Officials said they would be monitored for any signs of infection for a duration of two weeks by a qualified team of doctors and staff members.

"With 324 passengers, special flight has taken off for India from Wuhan. It may reach Delhi at 7.30am," said the Air India spokesperson at 1.19 am on Saturday.

The flight had departed from Delhi airport at 1.17 pm on Friday to evacuate Indian nationals from China, where more than 250 people - none of them Indian - have died due to novel coronavirus.

On Friday evening, the Air India spokesperson had stated that another special flight may take off from Delhi airport on Saturday to evacuate Indians from Wuhan.

The death toll from the novel coronavirus outbreak in China has risen to 259 with total confirmed cases surging to 11,791 amid stepped up efforts by a number of countries to evacuate their nationals from Hubei province, the epicentre of the virus, officials said on Saturday.

About Friday's flight, the spokesperson had said earlier during the day, "A team of five doctors from RML hospital, one paramedical staff from Air India, with prescribed medicines from doctors, masks, overcoats, packed food are in the aircraft. A team of engineers, security personnel are also there in this special aircraft. Whole rescue mission is being led by Captain Amitabh Singh, Director (Operations), Air India."

The spokesperson had added that there were five cockpit crew members and 15 cabin crew members on Friday's flight.

Before departure at Delhi airport, Air India Chairman and Managing Director Ashwani Lohani had said, "No service will take place in the plane. Whatever food is there will be kept in seat pockets. As there will be no service, there will be no interaction (between cabin crew and passengers)."

"Masks have been arranged for the crew and passengers. For our crew, we have also arranged a complete protective gear," he had added.

"Total five doctors from the Health Ministry are also going... The plane will be there (at Wuhan airport) for 2-3 hours," Lohani had said.

Air India has done such evacuations earlier also from countries such as Libya, Iraq, Yemen, Kuwait and Nepal.

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.