Mangaluru: AAP protesters ask MCC to form ward committees

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 20: The suspense over chief minister BS Yediyurappa expanding his council of ministers is set to continue until after he returns from his trip to attend the World Economic Forum (WEF) in Davos, Switzerland.

Yediyurappa, who heads a 10-member delegation to the Swiss ski resort, left on Sunday. Prior to his departure, he told reporters cabinet expansion will happen only after his return on January 24. “I discussed the issue with [BJP] national president Amit Shah for 30 minutes or so. He has given a positive response and I will expand the cabinet within two days after my return,” Yediyurappa said.

But sources said Shah, during his visit to Hubballi on Saturday, had indicated the exercise is likely to be delayed further as the central leadership will be busy with the assembly elections in Delhi. “Indications are there is no possibility of expanding the cabinet until February 11 when the electoral process for the Delhi elections ends,” said a source.

The development has obviously left ministerial aspirants, especially defectors from Congress and JD(S) who were re-elected on BJP tickets last month, restive. Moreover, while Yediyurappa has promised ministerial berths to all MLAs who switched to the BJP from Congress and JD(S), sources say Shah is only in favour of inducting six defectors (11 of whom won MLA seats on saffron party tickets in the byelections) into the cabinet.

“Shah’s advice to Yediyurappa is to strike a balance between defectors and loyalists. His concern is loyalists should not be left disappointed, while justice should be served to the defectors as well,” said a BJP functionary.

Meanwhile, KS Eshwarappa, senior party functionary and minister for rural development, said the BJP would never let down the defectors. “The party is indebted to them and I am sure they will all be rewarded,” he said.

BC Patil, one of the defectors, said some of them had met Shah in one-on-one meetings in Hubballi. “It was more a courtesy call and the issue of cabinet expansion didn’t come up during the meeting,” he said.

Maddur, Feb 7: Two daily wage workers were buried alive after a heap of mud collapsed on them near the Agriculture Department office on the Bengaluru-Mysuru highway, in Maddur of Mandya district on Thursday night, police said on Friday.

Police said that the deceased, Kashinath (37), and Rajgandh (30), were working at a site of the ongoing Bengaluru-mysuru highway development project.