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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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 16: Police have seized a vehicle carrying nine members of a family from Dharwad for misusing the travel pass issued by the district administration in Narendra Village and sent them for Quarantine.

Deputy SP Ravi Nayak and his team stopped the vehicle at Narendra village, in the outskirts of the city and found out that they were from Uppina Betagiri village returning from a wedding function using government pass issued for medical reasons.

The police seized the vehicle and sent them to KIMS hospital for a medical check-up. Their swab samples have been collected and sent for testing. The police have asked them to go for a compulsory home quarantine for 14 days.

Lucknow, Feb 4: Even as anti-NRC protests continue to rage across the country, the Lucknow University has queered the pitch by demanding citizenship proof from RTI applicants.

The Lucknow University (LU) refused to provide the information sought by the people who filed the Right to Information (RTI) unless they furnished the proof that they were Indian citizens.

Alok Chantia, one of the RTI applicants who was refused information by the varsity, said that he had lodged a complaint with the vice-chancellor of the varsity but even then he could not get the desired information.

"It is shocking how the university has twisted the RTI law as per its whims and fancy. It does not have any authority to do so," said the RTI applicant.

Chantia, also a faculty member at a degree college here, had sought details of appointment of teachers for self-financed courses and their pay scale.

"It is possible that some applicants who may not be familiar with the provisions of the RTI, may have furnished proof of their citizenship to the varsity to get the information but that cannot become a rule," he pointed out.

When contacted, university officials admitted that such a practice had been going on in the varsity for the past few years.

"This practice started during the tenure of the former vice-chancellor S.P. Singh and still continues," said a senior varsity official.