India would not discriminate among religions, we are not a theocratic country like Pakistan: Rajnath Singh

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.

The International Cricket Council (ICC) today confirmed the ICC Men’s T20 World Cup in Australia 2020 has been postponed due to the ongoing COVID-19 pandemic

At today’s meeting of the IBC Board (the commercial subsidiary of the ICC), windows for the next three ICC men’s events were also agreed to bring clarity to the calendar and give the sport the best possible opportunity over the next three years to recover from the disruption caused by COVID-19.

The windows for the Men’s events are:

1. ICC Men’s T20 World Cup 2021 will be held October – November 2021 with the final on 14 November 2021

2. ICC Men’s T20 World Cup 2022 will be held October – November 2022 with the final on 13 November 2022

3. ICC Men’s Cricket World Cup 2023 will be held in India October – November 2023 with the final on 26 November 2023

The IBC Board agreed to continue to monitor the rapidly changing situation and assess all the information available in order to make a considered decision on future hosts to ensure the sport is able to stage safe and successful global events in 2021 and 2022.

The IBC Board will also continue to evaluate the situation in relation to being able to stage the ICC Women’s Cricket World Cup 2021 in New Zealand in February next year. In the meantime, planning for this event continues as scheduled.

The Board will also continue to evaluate the situation in relation to being able to stage the ICC Women’s Cricket World Cup 2021.

ICC Chief Executive Manu Sawhney said: “We have undertaken a comprehensive and complex contingency planning exercise and through this process, our number one priority has been to protect the health and safety of everyone involved in the sport.

“The decision to postpone the ICC Men’s T20 World Cup was taken after careful consideration of all of the options available to us and gives us the best possible opportunity of delivering two safe and successful T20 World Cups for fans around the world.

“Our Members now have the clarity they need around event windows to enable them to reschedule lost bilateral and domestic cricket. Moving the Men’s Cricket World Cup to a later window is a critical element of this and gives us a better chance of maintaining the integrity of the qualification process. This additional time will be used to reschedule games that might be lost because of the pandemic ensuring qualification can be decided on the field of play.

“Throughout this process we have worked closely with our key stakeholders including governments, Members, broadcasters, partners and medical experts to enable us to reach a collective decision for the good of the game and our fans. I would like to thank everyone involved for their commitment to a safe return to cricket.”

Miami, Mar 12: The NBA has suspended its season "until further notice" after a Utah Jazz player tested positive Wednesday for the coronavirus, a move that came only hours after the majority of the league's owners were leaning toward playing games without fans in arenas.

Now there will be no games at all, at least for the time being. A person with knowledge of the situation said the Jazz player who tested positive was center Rudy Gobert. The person spoke to The Associated Press on condition of anonymity because neither the league nor the team confirmed the test.

"The NBA is suspending game play following the conclusion of tonight's schedule of games until further notice,'' the league said in a statement sent shortly after 9:30 p.m. EDT. "The NBA will use this hiatus to determine next steps for moving forward in regard to the coronavirus pandemic.''

The test result, the NBA said, was reported shortly before the scheduled tip-off time for the Utah at Oklahoma City game on Wednesday night was called off. Players were on the floor for warmups and tip-off was moments away when they were told to return to their locker rooms. About 30 minutes later, fans were told the game was postponed ``due to unforeseen circumstances."

Shutdown for two weeks?

Those circumstances were the league's worst-case scenario for now -- a player testing positive. A second person who spoke to AP on condition of anonymity said the league expects the shutdown to last a minimum of two weeks, but cautioned that time-frame is very fluid.

"It's a very serious time right now," Miami Heat coach Erik Spoelstra said. "I think the league moved appropriately and prudently and we'll all just have to monitor the situation and see where it goes from here."

The Jazz released a statement saying a player -- they did not identify Gobert -- tested negative earlier Wednesday for flu, strep throat and an upper respiratory infection. That player's symptoms diminished as the day went along, but the decision was made to test for COVID-19 anyway. That test came back with a preliminary positive result.

"The individual is currently in the care of health officials in Oklahoma City," the Jazz said, adding that updates would come as appropriate.