Hebbal bypoll: Setback to CM as Sharief’s grandson Abdul Rahman gets ticket

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 5: Amulya Leona, the 19-year-old woman who captured a nation’s attention by shouting full-throated slogans, allegedly in support of Pakistan, at a rally in Bengaluru, has reportedly held her composure under grilling by the Special Investigating Team (SIT).

The woman was arrested after her speech to an audience of protesters against the Citizenship Amendment Act on February 19, and was slapped with sedition charges.

Sources in the police said Amulya Leona seemed to be absolutely normal during interrogation by senior cops, unlike most other persons in such circumstances.

Not once throughout the grilling nor in judicial custody did she break down.

Amulya is said to have defended herself on charges that she shouted pro-Pakistan slogans. She made it clear that by speaking out at the rally at Freedom House, she did not mean to support the enemy country and that she was not against India.

Lower-rung officers said Amulya Leona seemed to be considerably influenced by the late firebrand activist Gowri Lankesh, who was shot dead in 2017.

In fact, the policewomen to whose charge she was entrusted right after she was arrested are said to have heaved a sigh of relief when she handed over to custody of prison staff.

An urban legend going around in lower-rung police circles is that Amulya Leona attended the funeral of Gowri Lankesh and fainted near where the late activist was buried. “It’s impossible for a 19-year-old to show such grit. We have seen hardcore criminals breaking down in custody. Forget about breaking down, Amulya Leona is becoming stronger,” they explain.

Bengaluru, May 3: Five more COVID-19 cases have been reported from Karnataka, taking the total number of coronavirus cases in the state to 606, the state government said on Sunday.

The total number of cases includes, 25 deaths and 282 discharged.

"Five new COVID-19 positive cases have been reported in Karnataka from 2nd May, 5 pm to 3rd May, 12 noon; taking the total number of positive cases to 606 which includes 25 deaths and 282 discharges," the government stated.

According to the statement, out of the five cases, three have been reported from Kalaburagi and two have been identified from Mudhol.