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New Delhi, May 4: The government has not talked about charging anything from migrant labourers as 85 per cent of the transportation cost is borne by the railways and 15 per cent by state governments, the Centre said on Monday amid a row over the national transporter allegedly charging the workers for ferrying them home during the COVID-19-induced lockdown.

The government also said the process of transporting the stranded migrant labourers was being coordinated by states “except for one or two states”.

Asked if the migrant labourers were being charged for being ferried home, Joint Secretary at the Health Ministry Lav Agarwal said that as far as migrant labourers are concerned, the guidelines have clearly stated that under the infectious disease management one should stay where he or she is.

“Based on the request given from states for particular cases, permission was given to run special trains. Be it government of India or the Railways, we have not talked about charging from workers. Eighty-five per cent of the transportation cost is borne by the Railways, while states have to bear 15 per cent of the cost,” he told reporters.

“Based on the request of the states the process that started, under which limited number of stranded migrant labourers have to be transported for a particular reason, is being coordinated by the state governments, except for one or two states,” Agarwal said.

At the daily briefing on the COVID-19 situation, Agarwal also said that in the last 24 hours, 1,074 COVID-19 patients have recovered, the highest number of recoveries in one day.

The recovery rate stands at 27.52 per cent with 11,706 COVID-19 patients cured till now, he said.

Agarwal said in the last 24 hours, 2,553 novel coronavirus cases were reported, taking the number of overall cases to 42,533. The total number of active cases stands at 29,453, he said.

The joint secretary also said that the COVID-19 curve is relatively flat as of now and it was not right to talk in terms of when the peak would come.

“If we collectively work then the peak might not ever come, while if we fail in any way we might experience a spike in cases,” he said.

Amitabh Kant, Chairman of the Empowered Group dealing with civil society, NGOs, industries and international partners, said in 112 aspirational districts, “we worked with the collectors and in these 112 districts only 610 cases have been reported which is two per cent of the national level infection”.

In these 112 districts, 22 per cent of India's population resides, he said.

In a few districts like Baramulla, Nuh Rachi, Kupwara and Jaisalmer more than 30 cases have been reported, while in the rest of the places very few cases are there, Kant said.

New Delhi, Apr 10: With 896 COVID-19 cases reported in the country in the last 24 hours, India's total number of coronavirus positive cases rose to 6,761 on Friday, informed the Union Ministry of Health and Family Welfare.

Out of all these cases, 6039 are active cases, 516 have been cured/discharged/ migrated, and 206 deaths have been reported so far.

The country witnessed the highest one day increase with 896 cases.

37 deaths were reported in the last 24 hours.

Maharashtra with 1364 cases is the worst affected state followed by the Union Territory of Delhi with 898 cases and Tamil Nadu with 834 cases.

The country is under a 21-day lockdown until April 14 which was imposed to curb the spread of the virus.

States like Odisha and Punjab have extended the lockdown till April 30.

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.