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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Hubballi, Apr 20: Dejected over failure to get alcohol for almost one month, a forty-five year old man and his sister died after consuming hand sanitizer in Kalghatgi taluk of Dharwad district on Sunday.

The deceased persons, identified as Basavaraj Venkappa Kuruvinkoppa and Jambavva Kattimani (50) of little hamlet Gambyapur, died at Karnataka Institute of Medical Sciences (KIMS).

The wife of the deceased person has lodged a complaint at Kalghatgi police station stating that her husband had been addicted to alcohol since the last 10-12 years.

Basavaraj and his sister have reportedly consumed hand sanitizer several times since the last 2-3 days, severely deteriorating their health as they felt it is replacement for liquor and has high levels of spirit content.

They were admitted to KIMS only by Sunday early morning after complaining of serious pain in the stomach. The KIMS director Dr Ramalingappa Anthartani said that the deceased appears to have consumed too much sanitizer and the doctors couldn't save their life as they approached the hospital very late.

He also claimed that he is awaiting the postmortem report to know how much quantity of hand sanitizer the deceased had consumed.

"Condition of the patients was very critical when they were admitted to KIMS hospital. It seems that they had drunk too much hand sanitizer for non-availability of liquor. Consumption of hand sanitizer could prove fatal as it has high chemical contents" KIMS director Dr Ramalingappa Anthartani said

The Karnataka government has prohibited the sale of liquor ever since the Centre declared lockdown to control the spread of Coronavirus. This has prompted the alcohol addicts to buy liquor by paying hefty prices in the black market.

But, many poor people in villages have started consuming cheaper hooch and this trade has recently flourished in the rural areas.

Hooch trade has also prompted officials of the excise department to conduct raids in several villages of North Karnataka region. The many theft cases of liquor shops are reported in Karnataka as drunkards have become desperate to get alcohol.

The Karnataka government was planning to allow the sale of liquor after the end of the first phase of lockdown. But, the rising cases of Corona positive cases has prompted it to extend the ban on liquor sale until May 3.

Mangaluru, Jul 19: Two flights with 346 stranded Kannadigas from Sharjah and Dammam landed at Mangalore International Airport (MIA) on Saturday night.

MIA officials said on Sunday that the chartered flight from Dammam landed with 178 stranded people, while an Air India flight from Sharjah landed with 168 stranded passengers under the 'Vande Bharat Mission'.

All the passengers on their arrival underwent health checkup and were sent for seven days institutional quarantine. They will undergo swab tests during the quarantine period, health officials said.