This Karnataka mom-daughter duo is set to circumnavigate earth in motor glider

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Apr 28: Former Karnataka chief minister Siddaramaiah on Tuesday suggested that the government can allow sale of liquor in green zones. 

“Merely because there is an economic slowdown in the state, I don’t recommend that alcohol should be allowed to be sold. But, wherever there are green districts, they can open (liquor sale) with certain restrictions, I think,” Siddaramaiah, the leader of the Opposition, told reporters. 

There are 14 districts in the state that are categorised as green because they do not have any active COVID-19 cases. The green districts are: Yadgir, Raichur, Koppal, Haveri, Davangere, Shivamogga, Chitradurga, Udupi, Chikmagalur, Hassan, Kodagu, Chamarajanagar, Ramanagara and Kolar.

There is tremendous pressure on the B S Yediyurappa administration to revive the economy as the lockdown has dried up all revenue sources. Excise, alone, accounts for 18 per cent of Karnataka’s own tax revenue. 

The Excise department recently suggested allowing regulated sale of liquor through the state-run MSIL outlets. The government, however, did not approve it fearing crowding and backlash from the Centre.

Bengaluru, April 3: Former prime minister HD Deve Gowda has written to Kerala Chief Minister Pinarayi Vijayan stating that he has communicated in writing to Karnataka Chief Minister BS Yediyurappa to make arrangements for the passing of vehicles related to medical facilities and essential goods between Mangaluru and Kasargod.

"What made me write this letter is the pain and anguish I experienced when BM Farookhji, the national working president of JDS and K Krishnan Kutty, MLA and a member of your Cabinet and member of JDS, a coalition partner of your government brought to my notice the inhuman and inappropriate action on part of the authorities of Karnataka to block the interstate highway between Mangaluru and Kasargod, bringing the traffic movements between the two states and particularly to Kasargod district having a sizeable population of Kannadigas to a grinding halt," Gowda wrote in the letter.

"I immediately wrote a letter to Yeddiyurappaji, the Chief Minister of Karnataka to make arrangements to permit goods movement and the passage of ambulances and other vehicles for any emergency. But authorities of Karnataka government appears to be very adamant despite the assurance given before the High Court," it added.

Gowda said that the situation is very grim since he learnt that four to five patients died for want of medical facilities since the ambulances ferrying the patients were denied permission to cross the border, to avail treatment from the hospitals at Mangaluru.

He also condemned the Karnataka government for denying access to medical facilities to people in Kerala.

"I very strongly condemn the attitude of the BJP government in Karnataka denying access to people from Kerala to avail medical facilities on emergency and also the movement of essential goods for the survival of the people and deprivation of such emergency services amounts to violation of human rights and opposed to all norms of humanity and humanitarian considerations," the letter read.
Gowda said he will take up the issue with Prime Minister Narendra Modi.

"I take this opportunity to assure you that I will take up this issue with the Prime Minister who had assured while imposing 21 days of lockdown that the supply of essential commodities will be maintained and hospital facilities will be kept open round the clock so as to prevent any untoward incident," he stated.