Students create awareness against drug abuse

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 10: Chief minister BS Yediyurappa said on Thursday he might not attend the World Economic Forum (WEF) meeting in Davos, Switzerland, and would most likely visit Delhi this weekend for discussions on the pending cabinet expansion.

He was expected to join Union ministers Piyush Goyal and Mansukh Mandaviya, chief ministers Amarinder Singh (Punjab) and Kamal Nath (Madhya Pradesh) and over 100 Indian CEOs at WEF’s 50th annual gathering on January 21-24.

“Mostly, I may not go for Davos (meet),” he told reporters on Thursday. Last week, he had said he was not keen on travelling to the Swiss town but was considering it as some chief ministers’ attendance was required at the high-profile event.

Eleven Congress-JD(S) turncoats, who contested the bypolls on BJP tickets and won, reportedly pressured Yediyurappa to take a decision on cabinet expansion before the now-uncertain Davos trip; it was even suggested that he should simply cancel the trip. The newly elected BJP MLAs are widely expected to be inducted as ministers. But officials in the Chief Minister’s Office (CMO) said his disinclination to travel had nothing to do with the cabinet exercise.

“It’s mainly because of his health. That place (Davos) has got temperature of minus 4-6 degrees and it will be quite tedious for Yediyurappa at the age of 76,” one official said. BJP functionaries, however, claimed that he was wary of taking a trip amid tensions in the party. “The new MLAs have been breathing down Yediyurappa’s neck. They have pushed him into a corner, demanding that he complete cabinet expansion before going anywhere,” a senior functionary said.

On Thursday, the chief minister said he had sought a meeting with party bosses in Delhi. “To discuss cabinet expansion and other important issues, I plan to travel to New Delhi on January 11 or 12. However, I am still waiting for an appointment with the BJP national president and prime minister,” he said.

While Yediyurappa, his additional chief secretary P Ravi Kumar and political adviser MB Maramkal may not visit Davos, a 10-member delegation from Karnataka, including Jagadish Shettar, is expected to travel. There are reports ministers’ family members might join the delegation.

Mangaluru, Jan 29: The police have registered a suo motu case against some of the youths who raised life threat slogans against former Karnataka Minister and Congress MLA UT Khader during the pro-Citizenship Amendment Act rally here on January 27.

A video of the incident that went viral on social media showed the youths belonging to BJP and other saffron outfits raising slogans that they will “cut off his limbs and chop off his head if necessary” during the rally organised by the BJP in support of the Citizenship Amendment Act on Monday.

Though Mr Khader did not file a complaint, the Congress party had urged the police to register a suo motu case.