I want Narendra Modi to continue as India’s Prime Minister: S M Krishna

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 26: After Yogi Adityanath said that no state can take manpower from Uttar Pradesh without his government's permission, Karnataka Pradesh Congress Committee (KPCC) president DK Shivakumar on Tuesday termed the Uttar Pradesh Chief Minister's move as "unconstitutional" and "against the right to freedom of movement."

"Uttar Pradesh Chief Minister Yogi Adityanath's move to restrict hiring people of Uttar Pradesh is unconstitutional and goes against the right to freedom of movement. Mr Yogi, please note that UP is not the private property of your govt. The people of Uttar Pradesh don't need your government's permission to work anywhere in India," Shivakumar tweeted.

"Mr Yogi doesn't understand the basic rules of governance in a democracy. Such actions lack common sense and will only make the people of Uttar Pradesh suffer more. When it's convenient for BJP, it's One Nation, when it's not, it's different states and different people. Heights of hypocrisy," he added.

Adityanath had on Monday said that the state government will provide social security and insurance to labourers and no state can take manpower from Uttar Pradesh without his government's permission.

"If any state wants manpower, they cannot take our people from the state without our permission as there were reports of misbehaviour with them in other states. We are taking full responsibility for labourers' social security. We will provide every kind of security to them including insurance. Wherever they will go, we will always stand by them," Yogi said.

The Chief Minister said that skill mapping is being done in Uttar Pradesh and a commission will be set up for labourers to ensure employment for them.

On Sunday, Adityanath had ordered the formation of a 'Migration Commission' for the purpose of providing the workers, who have returned to the state during the lockdown phase, with employment suited to their skills.

Mangaluru, Apr 12: A 70-year-old woman who tested positive for COVID-19 got discharged from a hospital here on Sunday after she recovered from the novel coronavirus, said Dakshina Kannada Deputy Commissioner, Sindu B Rupesh.

Seven other patients have also recovered and discharged in Dakshina Kannada till date. Total number of active cases in the district has decreased to 5 now.

As many as 232 COVID-19 positive cases have been reported in Karnataka till date.

The total number of coronavirus cases in India on Sunday climbed to 8447, including 764 cured and discharged, 1 migrated and 273 deaths, said the Ministry of Health and Family Welfare.