ASHAs hold protest across Karnataka demanding PPE kits, salary hike

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, Jan 9: A forest guard was arrested caught red-hand by Anti-Corruption Bureau (ACB) officials while accepting Rs 3,000 bribe from a person for granting permission to cut Mahogany trees for his personal use, a statement said on Thursday.

According to the statement, the arrested identified as N Sudheer sought bribe of Rs 15,000 from Gopalakrishna Herale, a resident of Beltangady.

Mr Herale, in a complaint, lodged on January 7 said that he had sought a permit from the forest department for cutting of Mahogany trees purchased by him.

Bengaluru, Mar 6: At least 13 persons, including women and children, were killed and five critically wounded when an SUV collided with a car that had crashed against a road divider moments ago near Kunigal in Tumakuru district of Karnataka in the early hours of Friday, police said.

Of the victims, while 12 died on the spot, a child breathed his last in a hospital, they added.

The injured were admitted to the hospital, the police said.

Among the dead, 10 were from Tamil Nadu and three from Bengaluru. All of them were pilgrims who were on their way to Dharmasthala in Karnataka.

There were five women and two children among the dead, the police said.

"Thirteen persons have died. The incident occurred post midnight. A car crashed against the road divider and another car collided with it," Tumakuru Superintendent of Police (SP) K Vamsi Krishna said.

The police had to struggle to pull the bodies out from the mangled vehicles.

On learning about the incident, relatives of the victims rushed to the spot.