Help poor, needy by not cutting their salaries: Karnataka CM

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Feb 13: Jnandev Kamath, former President of erstwhile Mangalore Stock Exchange Limited died late last night in a private hospital in the city.

He was 65 and is survived by his wife and two daughters.

Jnandev Kamath was an alumnus of SDM College of Law and Business Management. 

He was one the founding members of Mangalore Stock Exchange Limited. He was an avid sportsman, an accomplished cricketer, a champion rallyist and golf coach. 

He often played for Pentlandpet Sports Association (PPSA) in his younger days.

Bengaluru, Jul 6: Karnataka Chief Minister BS Yediyurappa on Monday said that the "country will have to learn to live with coronavirus as there are no options".

Yediyurappa made the remark after paying tribute to Babu Jagjivan Ram, on his death anniversary, at a ceremony in Vidhana Soudha.

"We don't have any other option, we have to learn to live with this virus. Even Prime Minister Narendra Modi has said the same thing. We have increased ambulances, we have made all arrangements to fight the pandemic. It is very important to safeguard ourselves," he said.

The Chief Minister added that the state government has made many arrangements to combat the widespread illness.

According to the Union Health Ministry, there is 23,474 number of COVID-19 cases in the state and 372 people have died due to the illness.