US police officer who brutally assaulted Indian in Alabama arrested, will be fired; FBI to probe matter

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, Jun 2: There is no place for hate and racism in the society, Microsoft CEO Satya Nadella has said, asserting that empathy and shared understanding are a start, but more needs to be done. Nadella’s remarks come in the wake of the custodial death of George Floyd, a 46-year-old African-American man who was pinned to the ground in Minneapolis on May 25 by a white police officer who kneeled on his neck as he gasped for breath.

“There is no place for hate and racism in our society. Empathy and shared understanding are a start, but we must do more,” Nadella said in a tweet on Monday.

“I stand with the Black and African American community and we are committed to building on this work in our company and in our communities,” Nadella said.

A day earlier, Google CEO Sunder Pichai expressed solidarity with the African-American community.

“Today on US Google & YouTube homepages we share our support for racial equality in solidarity with the Black community and in memory of George Floyd, Breonna Taylor, Ahmaud Arbery & others who don’t have a voice,” Pichai wrote on Twitter on Sunday.

“For those feeling grief, anger, sadness & fear, you are not alone,” Pichai said, sharing a screenshot of the Google search home page which said, “We stand in support of racial equality, and all those who search for it.”

Nadella’s Microsoft also said they will be using the platform to amplify voices from the Black and African American community at the company.

Nadella had also spoken out a few months ago about the discriminatory Citizenship Amendment Act passed in his native country. Talking to BuzzFeed’s editor-in-chief, Ben Smith, in Manhattan, Nadella said what’s happening in the country is “sad.”

“I think what is happening is sad. I feel, and in fact quite frankly, now being informed (and) shaped by the two amazing American things that I’ve observed which is both, it’s technology reaching me where I was growing up and its immigration policy and even a story like mine being possible in a country like this.

“I think, it’s just bad, if anything, I would love to see a Bangladeshi immigrant who comes to India and creates the next unicorn in India or becomes the CEO of Infosys. That should be the aspiration. If I had to sort of mirror what happened to me in the US, I hope that’s what happens in India,” Microsoft’s India-born CEO was quoted as saying by BuzzFeed.

Washington, May 30: The United States will end its relationship with the World Health Organization over the body’s handling of the coronavirus pandemic, U.S. President Donald Trump said on Friday, accusing the U.N. agency of becoming a puppet of China.

The move to quit the Geneva-based body, which the United States formally joined in 1948, comes amid growing tensions between Washington and Beijing over the coronavirus outbreak. The virus first emerged in China’s Wuhan city late last year.

Speaking in the White House Rose Garden, Trump said Chinese officials “ignored their reporting obligations” to the WHO about the virus - that has killed hundreds of thousands of people globally - and pressured the agency to “mislead the world.”

“China has total control over the World Health Organization despite only paying $40 million per year compared to what the United States has been paying which is approximately $450 million a year,” he said.

Trump’s decision follows a pledge last week by Chinese President Xi Jinping to give $2 billion to the WHO over the next two years to help combat the coronavirus. The amount almost matches the WHO’s entire annual program budget for last year.

Trump last month halted funding for the 194-member organization, then in a May 18 letter gave the WHO 30 days to commit to reforms.

“Because they have failed to make the requested and greatly needed reforms, we will be today terminating our relationship with the World Health Organization and redirecting those funds to other worldwide and deserving urgent global public health needs,” Trump said on Friday.

It was not immediately clear when his decision would come into effect. A 1948 joint resolution of Congress on U.S. membership of the WHO said the country “reserves its right to withdraw from the organization on a one-year notice.”

The World Health Organization did not immediately respond to a request for comment on Trump’s announcement. It has previously denied Trump’s assertions that it promoted Chinese “disinformation” about the virus.

“It’s important to remember that the WHO is a platform for cooperation among countries,” said Donna McKay, executive director of Physicians for Human Rights. “Walking away from this critical institution in the midst of an historic pandemic will hurt people both in the United States and around the world.”

‘ABSOLUTELY CRITICAL’

The United States currently owes the WHO more than $200 million in assessed contributions, according to the WHO website. Washington also gives several hundred million dollars annually in voluntary funding tied to specific WHO programs such as polio eradication, HIV, hepatitis and tuberculosis.

Amesh A. Adalja, a senior scholar at Johns Hopkins Center for Health Security, said that in practice Trump’s decision was unlikely to change the operations of the WHO.

“From a symbolic or moral standpoint it’s the wrong type of action to be taking in the middle of a pandemic and seems to deflect responsibility for what we in the U.S. failed to do and blame the WHO,” said Adalja.

When Trump halted funding to the WHO last month, two Western diplomats said the U.S. suspension was more harmful politically to the WHO than to the agency’s current programs, which are funded for now.

The WHO is an independent international body that works with the United Nations. U.N. Secretary-General Antonio Guterres said last month that the WHO is “absolutely critical to the world’s efforts to win the war against COVID-19.”

When asked about Trump’s decision, a U.N. spokesman said: “We have consistently called for all states to support WHO.”

Trump has long scorned multilateralism as he focuses on an “America First” agenda. Since taking office, he has quit the U.N. Human Rights Council, the U.N. cultural agency, a global accord to tackle climate change and the Iran nuclear deal. He has also cut funding for the U.N. population fund and the U.N. agency that aids Palestinian refugees.

“The WHO is the world’s early warning system for infectious diseases,” said U.S. Representative Nita Lowey, a Democrat who chairs the House Committee on Appropriations. “Now, during a global pandemic that has cost over 100,000 American lives, is not the time to put the country further at risk.”