Rahul Gandhi's two-day UAE visit begins

New Delhi, Mar 20: The government on Thursday said one Indian who tested positive for coronavirus has died in Iran while the other citizens infected with the disease are being provided treatment and taken care of by the Iranian government.

Noting that the virus tends to be more fatal for those whose immunity levels are low, a senior MEA official said the deceased, an elderly person, belonged to the vulnerable age group and had health-related complications.

The death was not because of lack of medical attention or care, he said.

"We have evacuated 590 people from Iran where the situation is very severe. The Indians infected with coronavirus in Iran have been segregated and taken care of very well by the government there. We believe they will recover and we will bring them back," the MEA official said, adding that 201 Indians were evacuated from Iran on Wednesday.

The official said closely knit families required some persuasion and counselling during the process of segregation to prevent the spread of the contagion.

The Indian ambassador and other officials explained the consequences of infected people not being separated from their families and were successful to a large extent in segregating the positive cases from the negative ones, he said.

"Some pilgrims and students are still there and our embassy and mission are in control (of the situation)," the official said.

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.

Srinagar, Jan 15: The Jammu and Kashmir administration on Tuesday evening allowed mobile Internet in parts of Jammu region and broadband in establishments providing essential services, days after the Supreme Court ordered a review of the curbs imposed in the Union Territory.

The order comes into effect from January 15 and shall remain in force for seven days, a government communication said.

In a three-page order, the administration asked Internet service providers to offer broadband facility (with Mac binding) to all institutions dealing with essential services such as hospitals, banks and government offices.

In order to facilitate tourism, the broadband Internet services would be provided to hotels and tour and travel establishments, the order said.

Mac Binding essentially means to enforce a client machine to work from a particular Internet Protocol address.

"Prior to giving such facility, the service providers have been asked to install necessary firewalls and carry out white-listing of sites that would enable government websites and website dealing with essential services like e-banking," the order said.

However, all social media sites remain out of bounds. "There shall be complete restrictions on social media applications allowing peer-to-peer communication and virtual private network applications for the time being," the order said.

The institutions and government offices that are being provided Internet access shall be responsible to prevent misuse, according to the order.

It said the 2G mobile connectivity on post-paid mobiles for accessing white-listed websites including e-banking will be allowed in districts of Jammu, Samba, Kathua, Udhampur and Reasi -- all in the Jammu region.

The order said that the police has brought material relating to the terror modules operating in Jammu and Kashmir including handlers from across the border who are attempting to aid and incite people by transmission of fake news and targeted messages through use of Internet.

The relaxation came days after the Supreme Court said access to the Internet is a fundamental right under Article 19 of the Constitution.

The SC verdict had come on Friday on a batch of pleas challenging the curbs imposed in Jammu and Kashmir after the Centre's abrogation of provisions of Article 370 on August 5 last year.

The court had also asked the Jammu and Kashmir administration to review within a week all orders imposing curbs in the Union Territory.

It had asked the J-K administration to restore Internet services in institutions such as hospitals and educational places providing essential services.

The J-K administration's Tuesday communication said that in view of the Supreme Court directions, the situation has been reviewed and Internet has been opened whereever it was possible keeping in view the security consideration.

In Kashmir, 400 additional Internet kiosks will be established, besides the 900 terminals which are already operational in the Valley.