Meenakshi elected Udupi CMC president, Sandhya vice-president

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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,  Mar 26: The nationwide lockdown in the view of coronavirus outbreak has driven some people to the edge. In Karnataka, within less than 24 hours, two cases of people creating trouble for police personnel have come to light.

On Wednesday, a middle-aged man was shot in his leg by the police after he tried to assault two police constables of Sanjaynagar police station. The police constables were identified as Manjunatha and Basavararaju.
The accused reportedly breached the check post at Bhoopasandra. He and his friends were over-speeding and performing stunts on bikes. When the policemen tried to secure them after giving them a chase, they attacked the cops.

When they were taken into custody, one of them again tried to escape and hurled stones and bricks on the cops. In order to prevent further assault, the police then fired two rounds – one in the air and the second one on his left leg.

Tumakuru, Feb 5: Former Lokayukta Justice N Santhosh Hegde has questioned the integrity of the B S Yediyurappa led BJP government as it has not taken an action to abolish the Anti Corruption Bureau (ACB) to re-establish the Lokayukta in Karnataka.

Speaking after felicitating the retired scientist of NASA Gopal Iyengar at the Karnataka Public School at Kadaba in Gubbi taluk he reminded that the BJP had promised to establish the Lokayukta.

"No party will like to strengthen the Lokayukta and now BSY is also tightlipped and even put an end by appreciating that ACB has been doing a good job", he regretted.

In fact, the Lokayakuta had the power to prosecute even the top brass of officials and now the ACB cannot without the government's permission, he clarified.

He denied any remarks on the CAA and NRC but observed that the youths of the country have been misguided by the politicians as they lost their focus on education by involving in protest rallies.

"I suggest they to straight away take a political plunge instead of getting misused at the hands of the politicians with selfish motives", he said.