Bantwal: Police tight-lipped on ‘arrest’ of accused in SDPI activist murder case

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 2: Senior Congress leader Mallikarjun Kharge said that the "RSS needs to be defeated to save the country" and Prime Minister Narendra Modi and Union Home Minister Amit Shah are "destroying the nation".

Kharge was speaking at a KPCC program where DK Shivakumar took charge as state Congress president.

He said that the Prime Minister and the Home Minister are not ready to take accountability for any issues including China, and are instead blaming Rajiv Gandhi Foundation of getting funds from China.

"Rajiv Gandhi foundation utilized funds for the development of the nation and for the betterment of the downtrodden people," Kharge said.

"Prime Minister Modi and Shah both are destroying the economy of the nation, and their policies and plans are the reason for increasing COVID-19 situation in India," he said.

"Prime Minister and Amit Shah never listen to Opposition parties, instead they plan something and their policies are the reason for MSME losses and job losses in the country," he added.

Mangaluru, Apr 22: Dakshina Karnataka District in-charge Minister Kota Srinivas Poojary on Wednesday warned of invoking Goonda Act against those who attack doctors, police or ASHA workers who are involved in the fight against the Covid-19 pandemic.

Addressing a function arranged to distribute food kits to journalists on behalf of SCDCC Bank at the Patrika Bhavan on Wednesday, the Minister said the authorities have been instructed to initiate action without any hesitation against anyone who tries to attack Corona warriors.

It has been observed across the state the incidents of attack and assault on ASHA workers, police and civic workers are increasing hence it was felt the need for severe actions against such elements , he added.