Sullia: Congress leader Ismail murdered while returning from Friday prayer

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 24: After the visit of fact finding committee members to the spot, the Christian community here decided to submit a report to the state government urging to install a 114-ft. statue of Jesus Christ at Kapala Betta in Kanakapura taluk of Ramanagaram district, Congress MLC Ivan D’souza said here on Thursday.

While talking to media, Mr D’souza said the committee would submit the report to Chief Minister B.S. Yediyurappa and Revenue Minster R. Ashok and urge the government to construct the statue at the earliest.

The RSS and other BJP outfits have strongly opposed the installation, following which the government ordered suspension of the work. A few days ago, Kalladka Prabhakar, RSS ideologue, took out a rally in Kanakapura opposing the installation.

Bengaluru, Apr 19: Karnataka Deputy Chief Minister CN Ashwath Narayan on Sunday said that "only essential and critical number of" employees of the Information Technology (IT) companies will be allowed to work from offices from April 20 onwards in Bengaluru, while others will have to continue working from home.

"Only essential and critical number of employees required will be allowed to turn up. In the next two days, it will be reviewed and a suitable decision will be taken. 

All the details will be communicated to the IT companies," Narayan said here.

Earlier on Saturday, in a meeting to review COVID-19 situation in Karnataka, it was considered that one-third of the employees of IT and biotechnology companies could be allowed to work from the office premises, while the rest should continue to work from home.

Earlier on April 17, the Deputy CM, after holding a video conference meeting with heads of the IT and biotechnology companies, had told reporters that up to 50 per cent of the workforce would have the opportunity to function from office premises after April 20.