Close shave for Jet Airways flight after ATC spots tractor on Mangaluru runway

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 2: Karnataka Minister BC Patil on Monday repeated his earlier statements that he will approach the Centre to bring a law to "shoot at sight" anyone who raises anti-India slogans.

"I am not going back on my statement as I have not said anything wrong. I had said that I will ask the central government to bring a law to shoot at sight those who shout slogans against India. Nowadays it has become a fashion for some youths to get popularity this way which spoils the country and patriotism," Patil told reporters here.

"There is nothing wrong in asking for a law. I have not said that I will myself shoot someone who shouts slogans against India. If the same thing happens in Pakistan, they will be beheaded. But we are not so brutal, we book a case and send them to judicial custody," he added.

Patil also said that there was no need for holding discussions over the amended Citizenship Act, but added that the ruling BJP will defend it if the opposition raises a stir in the state Assembly.

The budget session of the Karnataka Assembly began on Monday.

Bengaluru, May 8: Karnataka Chief Minister BS Yediyurappa has announced a special package for those involved in leather works, especially those who work on the roadside, informed the state's Deputy Chief Minister Govind M Karjol on Friday. 

The special package has been announced for cobblers and leather workers, who work on the roadside. 

The government has provided relief to 11,722 families at a rate of Rs 5,000 per family. These beneficiaries will be directly credited to their bank account through Dr. Babu Jagjivan Ram Leather Industries Development Corporation.

This special package will help livelihoods for skilled workers, said the Deputy Chief Minister. He congratulated the Chief Minister on the declaration of this special package on behalf of the Department of Social Welfare.