Yakshagana veteran Chittani Ramachandra Hegde is no more

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 5: Opening of Karnataka's borders to Kerala at this point in time will be like "embracing death," chief minister B S Yediyurappa said on Saturday making clear his government's stand not opening the state border.

The chief minister repeatedly said that for his government interest of the people of the state was supreme.

Yediyurappa made his stand clear in a letter to former prime minister and JD(S) patriarch H D Deve Gowda.

Gowda had recently written to the chief minister on March 31 seeking relaxation of the border restrictions on "humanitarian" grounds.

He had also written to Kerala chief minister Pinarayi Vijayan expressing his anguish against Karnataka authorities for imposing restriction and promising to raise the matter with prime minister Narendra Modi.

Stating the decision to close the border was not sudden, Yediyurappa said, it was a conscious decision after analysing the health situation in the area following the spread of COVID-19.

The chief minister cited the Indian Medical Association, Mangaluru branch data regarding the spread of Covid-19 in Kasargod of Kerala and surrounding areas which was alarming.

Noting that the region has nearly 106 positive coronaviruscases, he said, "this is the region with most number of infections in the country."

If this restriction is removed, it puts the health of the people of Karnataka in to risk and create a situation of "embracing death", so we will not be able to open the border, Yediyurappa said.

He also clarified that there was no prejudice behind his government's decision, and the interest of the people of the state was of utmost importance.

"...There is also no political maliciousness. We want to have good and brotherly relationship with neighbouring states," he said, adding that opening the border will open a pandora's box that will be disastrous for the state.

Yediyurappa also thanked opposition parties for their support to his government in its fight against COVID-19.

Bhopal, Mar 18: Congress leader Digvijay Singh's detention by police in Bengaluru is display of "dictatorship and Hitlarshahi" by the BJP, Madhya Pradesh Chief Minister Kamal Nath said here on Wednesday.

Singh staged a protest near a Bengaluru resort this morning where rebel MLAs of Madhya Pradesh Congress are staying, and demanded that he be allowed to meet them.

Singh, who has been detained by the police, accused the BJP of holding the MLAs captive and said that he would go on a "hunger strike".

Reacting to this, Nath said if the need arises he would also go to the Karnataka capital.

"Preventing Congress Rajya Sabha candidate and other ministers from meeting MLAs, misbehave with them, forcibly taken them into custody is totally a dictatorship and hitlershahi (sic)," Nath said in a tweet.

"Entire country is watching how an elected government is being made unstable and how BJP is murdering democratic values," Nath said.

"Why they are not allowing them to meet MLAs. What BJP is afraid of. BJP is playing a dirty political game in the state," the chief minister tweeted.

Demanding immediate release of detained Congress leaders, Nath said that democratic norms and Constitutional values are being stifled.

Later speaking to reporters, the CM said, "Why the BJP is afraid of presenting 16 MLAs here (Bhopal)? What is the problem in one person (Singh) meeting with 16 legislators?"

Nath reiterated that his government had proven majority on floor of the House in the last 15 months since coming to power.

Amid political uncertainty in Madhya Pradesh, the state Congress Legislature Party on Tuesday moved the Supreme Court seeking direction to the Centre and the BJP-led Karnataka government to grant it access to communicate with its rebel MLAs staying in Bengaluru.

The apex court had also directed the Kamal Nath government to respond by Wednesday to a plea by senior BJP leader Shivraj Singh Chouhan seeking immediate floor test in the Assembly.