Lingayat row: HDK seeks MB Patil's apology

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bantwal, Jan 15: Two people died in a head-on collision between two two-wheelers at Mani-Mysuru Highway in Bantwal last night, police said on Wednesday.

Police said that Parikshit (19) and Padmanabha Gowda (28) were heading towards Mane while Mohammed Ajmal (19) on his activa was on his way towards Kodaje when they collided head-on.

All the victims were immediately rushed to hospital for treatment where two of them breathed its last after not responding to the treatment.

Parikshit and Ajmal lost their lives while Gowda suffered critical injuries, the police said.

In another road accident reported from Kodangayi near Radukatte in Vittla, seven people including women and children sustained injuries when a Maruti Omni and another vehicle collided here on Tuesday evening.

Udupi, Jun 5: Senior BJP leader and Lok Sabha member Shobha Karandlje accused members of Tablighi Jamaat of spreading Coronavirus, particularly in slums, in Bengaluru.

Speaking to newsmen here Friday night, she said that the members had intentionally spread the virus in Siddique Layout and Padarayanapura. Members had hatched a conspiracy to destroy the country. She would raise the issue with the central government.

She said that New Delhi and Maharashtra were responsible for rising Covid-19 cases in the country. Highlighting the programmes, introduced by Modi-led NDA government for the past six years, she blamed Covid-19 for the collapse of the economy. But for Covid-19 Modi government at the Centre would have been a leader in the world,” she added.

She said 13,541 people, stranded in other States and foreign countries, had returned to Udupi. “We have sufficient beds in the district to tackle the situation. But if more people decide to travel to Udupi, arranging quarantine facilities would be a huge challenge,” she added.