Amit Shah’s plan is to incite communal tension before Karnataka polls: Rao

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Ballari, Apr 18: Hosapete town in Ballari district of Karnataka gasped in disbelief as it turned out that 11 members of one single family are positive for the coronavirus.

The whole town has been declared a containment zone and is being surveilled 24X7.

The family includes seven members whose tests returned positive today, three who tested Covid-19 positive on March 30 and one other member subsequently.

The seven who tested positive today had been negative when they were earlier tested along with the others.

They have all now been shifted to isolation wards at the District Hospital in Ballari.

Including this family of 11, Ballari has 13 positive cases so far, with one case each reported from Ballari and Siraguppa towns.

Startled by this sudden upsurge from Hosapete, the district administration has set up 16 fever clinics to screen people and six COVID care centres to treat positive cases. There are two dedicated COVID hospitals, one at Ballari and another at Torangallu in Sandur.

A team of psychological counsellors have been put on duty to provide support to the patients at the isolation centres.

Udupi, Feb 23: Karnataka's minister for Tourism and Culture CT Ravi on Sunday said that India is losing money as because people travel abroad to visit casinos.

Arguing that casinos are being used by countries to promote tourism, he took to Twitter to highlight the issue, saying, "During my interaction with FKCCI, I had mentioned that many countries have promoted Tourism through Casinos. Isn't it a fact that lakhs of Indians go abroad to play in Casinos? Can anyone stop them? At the moment, there is no proposal before Our Govt to set up Casinos here,' he tweeted in the morning.

He also urged the Central government to stop people from visiting abroad.

Yesterday, the minister had stated that he has no intention of developing "casino tourism" in the state.

"I only expressed my opinion on how other countries have promoted tourism, during a discussion. Casino tourism is one such thing, I have no intention of developing it here," Ravi had told media when asked to comment on Karnataka government's proposal of casinos in Coastal Karnataka.

"What I meant was many Indians go and spend there, our money should be spent here itself," he had said.