Hegde apologises in LS for his remark against Constitution, says his words were twisted

Bengaluru, May 12: People returning to Karnataka from other states will have to remain in quarantine">institutional quarantine even if they are asymptomatic, according to Department of Health and Family Welfare Services, Government of Karnataka

"All persons returning to Karnataka from any State, symptomatic or asymptomatic shall be kept in quarantine">institutional quarantine," read an order issued by the State Health and Family Welfare Services.

It further read, "For persons claiming to come from Goa, Deputy Commissioner of receiving district should verify and in the event of adequate capacity not being available, can put them in home quarantine for a period of 14 days, if the claim regarding the origin state is confirmed."

"Deputy Commissioner/Special Commissioner, BBMP will fix the rates for hotels where such returnees will be staying on a payment basis," the statement read.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Tehran, Jan 12: Iranian police dispersed students chanting “radical” slogans during a Saturday gathering in Tehran to honour the 176 people killed when an Ukrainian airliner was mistakenly shot down, Fars news agency reported.

News agency correspondents said hundreds of students gathered early in the evening at Amir Kabir University, in downtown Tehran, to pay respects to those killed in the air disaster. The tribute later turned into an angry demonstration.

The students chanted slogans denouncing "liars" and demanded the resignation and prosecution of those responsible for downing the plane and allegedly covering up the accidental action.

Iran said Saturday that the Ukraine International Airlines Boeing 737 was “unintentionally” shot down on Wednesday shortly after taking off from Tehran's main airport. All 176 people on board died, mostly Iranians and Canadians, many of whom were students.

Fars, which is close to conservatives, said the protesting students chanted “destructive” and “radical” slogans. The news agency said some of the students tore down posters of Qasem Soleimani, the Iranian general killed on January 3 in a US drone strike on Baghdad.

Fars published pictures of demonstrators gathered around a ring of candles during the tribute and a picture of a torn poster bearing the image of a smiling Soleimani. It said that police "dispersed" them as they left the university and blocked streets, causing a traffic jam.

In an extremely unusual move, state television mentioned the protest, reporting that the students shouted "anti-regime" slogans.

A video purportedly of the protest circulated online showing police firing tear gas at protesters and a man getting up after apparently being hit in the leg by a projectile. It was not possible to verify the location of the video, or when it was filmed.

Iran's acknowledgement on Saturday that the plane had been shot down in error came after officials had for days categorically denied Western claims that it had been struck by a missile. The aerospace commander of Iran's Revolutionary Guards accepted full responsibility.

But Brigadier General Amirali Hajizadeh said the missile operator acted independently, shooting down the Boeing 737 after mistaking it for a "cruise missile".