Why not a CBI probe into DySP's suicide, SC asks Karnataka

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Yadgir, Feb 27: A four-year-old girl and her four-month-old sibling died after consuming pesticide mistaking it to juice at Kodal village in Vadagera taluk of Yadgir district on Wednesday.

After noticing her daughters lying lifeless, mother Shehnaz attempted suicide by consuming poison.

Khairunna (4) mistook pesticide for juice and consumed it while her mother was busy doing household chores. She also reportedly made her four-month-old sister drink. 

Upon seeing the siblings lying lifeless, Shehnaz, fearing her husband and mother-in-law, attempted suicide by consuming poison.

All three were rushed to Yadgir district hospital. The siblings died while their mother is battling for her life.

Mumbai, Apr 15: A 35-year-old man, who worked as a priest in suburban Kandivali, allegedly committed suicide on Tuesday afternoon, hours after learning that lockdown to contain coronavirus has been extended.

The deceased was identified as Krishna Pujari, native of Udupi in Karnataka, who was attached to Durga Mata temple in Iraniwadi area of Sanjay Nagar.

Pujari, who lived with three other priests, was waiting for the lockdown to end as he wanted to go back to his hometown, a police official said.

When he learnt that the lockdown has been extended till May 3, he was terribly depressed and allegedly hanged himself in kitchen, the official added.

No suicide note has been found, he said.