Delhi High Court to hear plea against ban on Zakir Naik's NGO

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, Jan 7: A ten-year-old boy who suffered severe injuries after drowning in Kadri temple pond died on Monday,

Police said that the deceased has been identified as Sandesh, resident of Athani taluk.

Sandesh drowned while taking a dip in a pond at Kadri Shree Manjunatha Temple on Sunday evening. He was immediately rushed to the hospital in the city, however, he died on Monday morning after he stopped responding to the treatment.

New Delhi, Jun 4: The Supreme Court on Wednesday sought response from Prajwal Revanna, the grandson of former Prime Minister HD Deve Gowda, on a plea challenging his election in 2019 from Hassan Lok Sabha constituency as a joint candidate of the Janata Dal Secular and the Congress.

A bench of Chief Justice SA Bobde and Justices AS Bopanna and Hrishiksh Roy issued notice to the returned candidate from the high-profile constituency on an appeal challenging the Karnataka High Court's order by which an election petition against his win was dismissed.

In the proceedings held through video-conferencing, the top court issued notice and tagged the appeal filed by G Devarajegowda for hearing with other similar pending plea filed by the BJP candidate on the issue.

Mr Devarajegowda in the plea said that his election petition was dismissed by the High Court on "procedural irregularities". The plea said that Mr Prajwal had resorted to unfair and corrupt practices and his election should be set aside.

It said the High Court did not consider the fact that by dismissing the election petition, it was running a risk of having a representative in parliament who has not got the maximum number of valid votes.

The petitioner, an advocate by profession, sought a declaration of rival BJP candidate, A Manju, as the winner for having secured the maximum number of valid votes.

A separate appeal was earlier filed by Mr Manju against the High Court order and the top court had already issued notice to the retuned candidate on that.

Mr Manju had challenged the 2019 election of Mr Prajwal on the ground that there was allegedly non-disclosure of assets held by him in his election affidavit.

Mr Prajwal was declared winner with 6,76,606 votes. Mr Manju came first runner-up with 5,35,282 votes.