Virus impacts global economy, raises concerns of job wrecking recessions

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.

Washington, May 15: A top US senator has unveiled an 18-point plan, including enhancing military ties with India, to hold the Chinese government accountable for its "lies, deception, and cover-ups" that ultimately led to the global COVID-19 pandemic.

The prominent suggestions are moving manufacturing chain from China and deepening military-strategic ties with India, Vietnam and Taiwan.

"The Chinese government maliciously covered up and enabled a global pandemic that has caused misery for so many Americans. This is the same regime that locks up its own citizens in labour camps, steals America's technology and jobs, and threatens the sovereignty of our allies,” said Senator Thom Tillis, presenting his detailed, 18-point plan on Thursday.

"This is a major wake-up call to the United States and the rest of the free world. My plan of action will hold the Chinese government accountable for lying about COVID-19; sanctioning the Chinese government while protecting America's economy, public health, and national security," he said.

The plan seeking to create a Pacific Deterrence Initiative and immediately approve the military's request for USD 20 billion in funding. It also calls for deepening military ties with regional allies and expand equipment sales to India, Taiwan and Vietnam.

Encourage Japan to rebuild its military and offer Japan and South Korea sales of offensive military equipment, it said.

"Move manufacturing back to the US from China and gradually eliminate our supply chain dependency on China. Stop China from stealing our technology and provide incentives to American companies to regain our technological advantage. Strengthen cybersecurity against Chinese hacks and sabotage," the plan stated.

"Prevent American taxpayer money from being used by the Chinese government to pay off their debt. Implement the US ban on (Chinese technology company) Huawei and coordinate with our allies to implement similar bans,” it added.

The plan seeks restitution from the Chinese government and imposition of sanctions for lying about the virus. It further said China should be sanctioned for their atrocious human rights record.

Senator Tillis' plan urges the Trump Administration to formally request the International Olympic Committee to withdraw the 2022 Winter Olympics from Beijing.

"Stop China's propaganda campaign inside the United States. Treat Chinese government-run media outlets as the propaganda proxies that they are," the plan stated.

Urging the government to investigate the Chinese government's cover-up of the spread of COVID-19, the plan also seeks to investigate America's reliance on China's supply chains and threats to public safety and national security.

"Ensure the independence of the WHO through investigations and reform. Expose and counter China's predatory debt-trap diplomacy targeting developing countries. Increase intelligence sharing on potential pandemics and lead the creation of a watchdog organization to monitor foreign governments' handling of deadly viruses," Tillis said in his suggestions.

The coronavirus, which first emerged in China's Wuhan city in December last, has killed over 3,00,000 people with 4.3 million confirmed cases across the world. More than a quarter of all confirmed COVID-19 cases are from the US.

There has been increasing pressure on the President Trump, in the last several weeks, to take action against China as lawmakers and opinion-makers feel that the COVID-19 spread across the world from Wuhan because of Chinese inaction.

Meanwhile, Senator John Barrasso, in a speech on the Senate floor on Thursday, highlighted the need to update the Foreign Intelligence Surveillance Act (FISA) legislation that was put on hold by the coronavirus pandemic.

"The virus could have been contained had it not been for the Chinese Government's unscrupulous cover-up. China knew the risk months before the rest of the world; yet Chinese communist leaders destroyed key evidence, they under-reported the number of coronavirus cases, and they misled the world about its deadly, rapid spread," he said.

Asserting that the virus should have been contained in Wuhan, he said tens and tens of thousands of Americans and hundreds of thousands of people worldwide have died as a result of China's failure.

Barrasso said the US should encourage its companies to create American and western supply chains. "That way our frontline workers have what they need in the time of crisis," he said.

"Not again, not ever will we be exclusively sourced for critical drugs from China. We should diversify supply and bring home as much of our supply chain as possible," he added.

Congressman Troy Balderson introduced bicameral legislation with Congressman Doug Collins and Senator Lindsey Graham that will hold China accountable for deceptive actions taken by its leaders that led to the spread and subsequent global pandemic.

The COVID-19 Accountability Act authorises president Donald Trump to impose sanctions on China if it fails to cooperate with a full investigation led by the US or its allies into the events that lead to the COVID-19 outbreak.

"The number of Ohioan lives needlessly claimed by this pandemic could have been significantly reduced had China taken appropriate measures to control the virus' spread and disclose its severity," said Balderson.

"The United States can't look the other way when China so recklessly compromised worldwide health and the global economy. China and its Communist Party leadership must be held accountable," he said.

New Delhi, Jun 23: The meeting between Indian Army's 14 Corps Commander Lt Gen Harinder Singh and his Chinese counterpart got over after around 11 hours, sources said.

"Today's meeting between the Corps Commander-level officers of India and China is over. The meeting which started at 11:30 am went on for around 11 hours. More details awaited," sources said.

The meeting started at around 11:30 am at Moldo on the Chinese side of Line of Actual Control (LAC) opposite Chushul to defuse the tensions in Eastern Ladakh sector due to Chinese military build-up, the sources said.

This is the second meeting between the two corps commanders. They had met on June 6 and had agreed to disengage at multiple locations. India had asked the Chinese side to go back to pre-May 4 military positions along the LAC.

The Chinese side had not given any response to the Indian proposal and not even shown intent on the ground to withdraw troops from rear positions where they have amassed over 10,000 troops.

India is also likely to discuss the change in rules of engagement on the LAC where the forces have been empowered to use firearms in extraordinary circumstances, sources had said.

They said India will also ask China to honour the commitment given during June 6 talks to disengage in the Galwan valley completely and other places.

The build-up of Chinese air assets including strategic bombers by the PLA Air Force in fields near Indian territory close to Ladakh is also likely to figure in discussions.

India and China have been involved in talks to ease the ongoing border tensions since last month.

However, last week as many as 20 Indian soldiers lost their lives in the face-off in the Galwan Valley after an attempt by the Chinese troops to unilaterally change the status quo during the de-escalation in eastern Ladakh.

The Indian intercepts have revealed that the Chinese side suffered 43 casualties including dead and seriously injured in the violent clash.