Bombs hurled at RSS office; BJP holds CPM responsible

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 13:  Karnataka Deputy chief minister Dr CN Ashwath Narayan on Monday urged chief minister BS Yediyurappa to cancel the license of private hospitals and private medical colleges which did not hand over their 50 per cent beds, to the government, Karnataka Deputy Chief Minister's Office said.

On June 26, the Karnataka government reserved about 50 per cent for COVID-19 patients in some private hospitals in Bengaluru.

Earlier in the day, former Karnataka Chief Minister HD Kumaraswamy said that the state government should provide vitamin C drug, Ayush Ministry-certified immunity boosters and sanitisers to every household in the wake of the coronavirus spread.

According to the Union Health Ministry, Karnataka has recorded 38,843 cases of COVID-19 to date.

Bengaluru, Jan 3: Three advocates were appointed additional judges of the Karnataka High Court.

A Law Ministry notification, issued here on Friday said Maralur Indrakumar Arun, Engalaguppe Seetharamaiah Indiresh and Ravi Venkappa Hosmani have been appointed as additional judges of the high court on Thursday. The newly appointed Judges will continue in their post for a period of two years from the date they assume charge.

While the names of advocates Arun and Indiresh were recommended by the Collegium on March 25 last year the name of Advocate Hosmani was recommended by the Collegium on October 4.