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Mangaluru, Mar 29: The second day of a total clampdown by Dakshin Kannada district had no impact as panic-stricken people rushed to buy essential commodities in markets in the City on Sunday without caring for Social distance to be maintained.

Since the crowd swell within minutes the police were forced to order the shops forcibly as otherwise, it might have led to spread of dreaded killer Coronavirus COVID-19.

The rise in Covid-19 cases in Dakshina Kannada and the neighbouring Kasargod district had forced the district administration to declare on total bandh on Saturday and Sunday but in vain.

Bengaluru, Jul 19: Senior JDS leader H D Kumaraswamy on Sunday advised the Karnataka government to utilise the services of private medical colleges in treating Covid-19 patients, by taking them into confidence, instead of threatening them with license cancellation for not complying with directives.

He also said a concentrated effort should be taken in the fight against coronavirus. "It was wrong for any hospital to deny treatment. It is also not correct on part of the government to threaten the private medical colleges with cancellation of their licence for that reason. It won't be of any help at this time of medical emergency.

Remember that MCI has the authority to cancel licenses, not government," Kumaraswamy tweeted. "Instead of showing fury on private medical colleges at such a time, concentrate on taking their service by taking them into confidence. Look into their needs. I urge for a concentrated fight against coronavirus," he added.

Chief Minister B S Yediyurappa had on Saturday convened a meeting with Private Medical College Hospitals regarding Covid management and directed them to provide 50 per cent of the beds as promised.

In another tweet, Kumaraswamy said the notice being put out by local administrations in front of coronavirus patient's house is leading to new age social discrimination and untouchability.

To ensure that infected patients and his family leads a respectable life, such a practice has to be dropped immediately. "..... instead health workers should be sent to their houses to educate and instill confidence in them," the former CM added.

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