Karnataka will urge Modi govt to ban SDPI: CT Ravi

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 5: Rural development and panchayat raj minister K S Eshwarappa has received two threatening calls from Tamil Nadu, according to Home Minister Basavaraj Bommai.

He said that he had instructed the police to provide adequate security. 

At 12.30 pm on Friday, an unidentified person made a phone call. Speaking in Tamil, he threatened Eshwarappa with life, it is said.

Eshwarappa is known for abusive remarks and issuing threats to non-Hindus.

Bengaluru, Mar 30: The coronavirus scare has taken a toll on the poultry industry in Karnataka with many poultry farm owners culling the birds, insiders in the poultry industry said.

At least one lakh birds have been culled in the last one week, the sources said.

Ever since the news spread about novel coronavirus spreading rapidly, the poultry industry started feeling the heat.

The lockdown spelt further trouble for the industry with reduced business compelling farm owners to go in for the culling.

According to Muddukrishna of C N Nischchith Enterprises, a live chicken dealer in Bengaluru, the culling had taken place in Shivamogga, Kolar and other places.

"There is a drastic decline in business. There are neither customers nor enough supply of birds for sale. We are badly hit. There are many poultry farm owners who have incurred tremendous loss due to the lockdown," Muddukrishna told news agency.

Another major poultry industry owner, having his farms in Channapatna, Ramanagar, Anekal and surrounding places, said he had to get rid of at least 4,000 birds in each of these farms.

"This is not restricted to me alone. There are about 64 major poultry industries who have gone for the drastic measure of culling," said the farm owner.

He said in the last one week, at least one lakh birds have been culled as it was hard for them to maintain them.

"Each bird needs at least a kilogram of grains in three days to eat whereas each kg of poultry food costs about Rs 32. We have about two lakh birds in our farm. How can we maintain if there is no business," rued the poultry farm owner.

The industry has suffered a double whammy.

People gave up eating chicken following rumours that the novel coronavirus COVID-19 is similar to SARS, another virus.

Further, the lockdown has blocked the transportation of these birds, he added.

According to the farm owner, in the last one month, he had suffered a loss of around Rs 15 lakh and if the situation continues for the next three months, his condition would be beyond imagination.

Muddukrishna said the poultry farm association had given a memorandum to the animal husbandry and fisheries department seeking direction on the transportation of these birds.

Accordingly, the secretary in the department of Animal Husbandry and Fisheries A B Ibrahim issued a circular to all the city police commissioners, deputy commissioners of the district, superintendent of police and the CEO of Zilla Panchayath on Friday that the animal husbandry services have been declared as essential services.

Ibrahim said in his circular that the production of chicken birds, sheep, goat, pigs, etc in the farm and their transportation, manufacturing feed, liquid nitrogen meant for veterinary use and other items related to the Animal Husbandry should be permitted.

"Despite the order, our vehicles are stopped and drivers are harassed," alleged Muddukrishna.