Baraguru Ramachandrappa to inaugurate Alva's 'Nudisiri'

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Feb 17: A combative ruling BJP is bracing to face the onslaught of the opposition Congress and the Janata Dal-Secular (JD-S) in the year's first legislature session beginning on Monday.

"We are ready to counter the opposition parties on any issue they want to raise or discuss, keeping in view the spirit of fairness in a democratic set-up, as we have the numbers to provide a stable government," party's state unit spokesman G. Madhusudhana told news agency here.

Ahead of the 3-day session, the BJP's legislature party met here under the leadership of Chief Minister B.S. Yediyurappa to chalk out its strategy to address issues, move bills and present the state budget for fiscal 2020-21.

"We hope the Congress and JD-S members will allow Governor Vajubhai Vala to address the joint session of the legislature on Monday and not disrupt his speech or walkout of the House before he concludes to maintain the dignity of his office," Madhusudhana said after the BJP meeting at a private hotel over dinner.

The legislature will resume the month-long budget session on March 2 with a special discussion for two days on the Constitution, markings the 70th year of its adoption and enforcement.

About 100 legislators, including the three Deputy Chief Ministers, the newly sworn-in cabinet ministers, council members and party's state unit members participated in the 2-hour long meeting.

"Yediyurappa, who also holds the Finance portfolio, will present the state budget for fiscal 2020-21 on March 5, which will be the fifth time as the fourth Chief Minister in over a decade," the official said.

Both the Houses will deliberate on the budget proposals and pass it by March 31.

In the 225-member Assembly, including one nominated, the ruling BJP has 117, opposition Congress 68, Janata Dal-Secular (JD-S) 34, Bahujan Samaj Party (BSP) one, Independents 2 and vacant 2.

Buoyed up by winning 12 of the 15 seats in the December 5 assembly by-elections, the party is confident of passing the finance and other bills, as it has the support of 119 members, including 2 Independents in the lower House.

"There is no threat to our government, which will complete the remaining 3-year term of the Assembly till May 2023. Yediyurappa has already won the majority test on July 29, 2019, three days after he took office for the fourth time," Madhusudhana said.

The Congress, however, asserted that it would raise the alleged misuse of police against the opposition members, anti-CAA protestors and minorities.

"We will question the morality of the government in making a tainted legislator like Anand Singh a forest minister when a dozen illegal mining cases are pending in the courts," a Congress official told news agency.