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The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

Bengaluru, Jan 7: Slogans of ‘Inquilab Zindabad’ rent the air at Town Hall on Monday evening as thousands of students, social activists, lawyers, doctors and theatrepersons among others staged a protest to denounce Sunday’s attack on the students and faculty of New Delhi’s Jawaharlal Nehru University (JNU).

“This is unacceptable. As students living in hostels, we are now worried about our safety,” said Prakruthi Kishore, a student of National Law School of India University (NLSIU), Bengaluru.

Rishi Kumar, a student of Indian Institute of Science, pitched in. “JNU is an extremely protected university located in the national capital. It’s surprising that such an incident occurred amid tight security.”

Delhi police and the government need to wake up and take stringent action against the goons, Kumar said, adding: “Students can’t be treated like puppets. The government needs to act immediately.”

“The government is behaving shamelessly by sending goons to threaten students and professors of JNU,” said Alokanath Pandit, a lawyer.

With “Zor se bolo-azadi, tum din me maaro-azadi, hum raat me ayenge-azadi,” drowning the cacophony of traffic at the intersection, the sloganeering reached a crescendo around 6pm as the protesters raised their hands in a show of solidarity with the beleaguered JNU community.

Theatrepersons Prasanna and Arundathi Nag, farmer leader Kodihalli Chandrashekar and social activists Tara Krishnaswamy and Srinivas Alavilli were present at the protest venue. “It is not fair that educational institutions are now becoming the target. First, they hiked fees and now they are attacking students. What is the government doing,” Arundathi asked.

“JNU has always been an institution which has raised its voice against atrocities across the country as its students harbour no fear. This is an alarm bell for the country and the government to wake up. Students are the future and can’t be targeted,” she added.

Chandrashekar said Narendra Modi is unfit to be the Prime Minister as he doesn’t keep his word. “Modi said he will help farmers but has done nothing for them. He said he will provide employment to students but is now making them furious,” he said.

Bengaluru, Mar 27: A software engineer has been arrested for giving a "call" to the people to sneeze in the open and spread coronavirus, police said on Friday.
The person identified as Mujeeb Mohammad had made this call in a Facebook post.
"Let's join hands, go out and sneeze with open mouth in public. Spread the virus," he wrote.

"The person who put this post saying people should go out and sneeze and spread the virus has been detained. His name is Mujeeb. He works in a software company," Bengaluru Joint Commissioner of Police Sandeep Patil said in a statement.

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Meanwhile, Infosys tweeted: "We are deeply concerned with an inappropriate post being attributed to an Infosys employee. We strongly reaffirm our commitment to responsible social-sharing.

The company also said, "Our preliminary enquiry, and discussions with our employees suggest that this could be a case of a mistaken identity."
"However, given the seriousness with which we take such matters, we are investigating this further and will also assist with any independent investigation. The company would take appropriate action based on its investigation," it added