Pak seeks bigger SAARC to counter India's influence

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.

Geneva, Jul 11: The World Health Organization said Friday that it is still possible to bring coronavirus outbreaks under control, even though case numbers have more than doubled in the past six weeks.

WHO chief Tedros Adhanom Ghebreyesus said the examples of Italy, Spain, South Korea and India's biggest slum showed that however bad a outbreak was, the virus could still be reined in through aggressive action.

"In the last six weeks cases have more than doubled," Tedros told a virtual press conference in Geneva.

However, "there are many examples from around the world that have shown that even if the outbreak is very intense, it can still be brought back under control," said Tedros.

"And some of these examples are Italy, Spain and South Korea, and even in Dharavi -- a densely packed area in the megacity of Mumbai -- a strong focus on community engagement and the basics of testing, tracing, isolating and treating all those that are sick is key to breaking the chains of transmission and suppressing the virus."

The novel coronavirus has killed at least 555,000 people worldwide since the outbreak emerged in China last December, according to a tally from official sources compiled by AFP on Friday.

Nearly 12.3 million cases have been registered in 196 countries and territories.

"Across all walks of life, we are all being tested to the limit," Tedros said, "from countries where there is exponential growth, to places that are loosening restrictions and now starting to see cases rise.

"Only aggressive action combined with national unity and global solidarity can turn this pandemic around."

London, Feb 12: Fugitive liquor baron Vijay Mallya returned to the courtroom here on Wednesday, the second day of hearing at the UK High Court, where the former billionaire has appealed against the extradition decision of Westminster Magistrates Court in December 2018.

On being asked about his expectations from the lengthy appeals process against the extradition order as today is the last day for Mallya to present his defence, the embattled former Kingfisher Airlines boss replied, "I have no clue. You see. I'll also see it. Let's not get into a speculative game."

When asked on what would happen if Mallya loses the case and has to return to India, the liquor baron responded: "We do have arguments."

The UK High Court, on Tuesday, had also heard Mallya's appeal against the Westminster Magistrates' Court order extraditing him to India to face alleged fraud and money laundering charges amounting to Rs 9,000 crore.

Mallya was present in the court along with his counsel Clare Montgomery during the hearing. Officials from Enforcement Directorate (ED) and Central Bureau of Investigation (CBI) along with counsel Mark Summers representing the Indian government were also present.

When the judge asked if there was a timeline in the case, Clare said," This is a very dense case," involving multiple individuals and organisations and that not everything had been taken into account by the magistrate Emma Arbuthnot in her ruling against Mallya.

Montgomery contended that the magistrate's ruling had been riddled with "multiple errors". She also brought into question the admissibility of documents submitted by the Indian government - including witness statements and emails that proved crucial in the ruling by judge Arbuthnot, who found "clear evidence of misapplication of loan funds" and that there was a prima facie case of fraud against Mallya.

As she had done throughout the trial, Montgomery continued to assert that Mallya had not acted in a fraudulent manner or run a pyramid and that the collapse of Kingfisher Airlines was, in fact, the failure of a business in difficult economic circumstances.

She also reiterated concerns about the conduct of the Central Bureau of Investigation (CBI) in bringing charges against Mallya, claiming that the tycoon had been made a scapegoat.

Montgomery also stated that the Indian government had presented the loan taken out by Kingfisher Airlines, not as a simple business loan but was part of a larger and elaborate attempt at defrauding the banks by Mallya and Kingfisher Airlines management.

This, Montgomery contended, was but one example of a wider misinterpretation of the case by judge Arbuthnot.

The High Court justices reprimanded Montgomery for concentrating on the evidence - in essence rehashing the case presented at the lower court - rather than the apparent "mistakes" made by judge Arbuthnot in her ruling.

Mallya remains on bail of £650,000 as he has done throughout this legal process.

The Crown Prosecution Service which is representing the Government of India will present its case for the extradition of Mallya on Wednesday.

The 63-year-old businessman fled India in March 2016 and has been living in the UK since then.