Emirates plane lands in Mumbai after passenger dies

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 14: BJP leader and Karnataka Revenue Minister R Ashok refused to comment on the Bellary car accident case, allegedly involving his son, saying that the matter was still under investigation and that they did not have anything to do with the said car.

The car crash took place on February 10, when a speeding red Mercedes Benz allegedly driven by Ashok's son rammed into a tea stall by the roadside killing two people. While a 16-year-old boy Ravi died on the spot, one of the car's passengers was also killed in the accident.

"I came to know about the incident and also heard that two people have died and a few others have sustained injuries. Everybody is equal under the law. It is not fair to comment as a minister when the case is being investigated," Ashok told reporters here on Thursday.

However, the minister avoided answering questions about his son's presence in the car and said that they had "no connection" with the car.

"The case is in the investigation stage, I don't want to comment on anything. My son's name is not present in the FIR. We have no connection with the car," he said.

Superintendent of Police CK Baba told reporters that Ashok's son was not present in the car.

"There was no senior BJP leader and Revenue Ministers's son in the car. We will not hide anything and the case will be investigated," Baba said.

Bengaluru, Jan 16: Members and activists of social organisation Rakshana Vedike on Thursday staged a protest and demanded the arrest of BJP MLA Somashekhara Reddy, for his 'provocative' remarks and statements.

The protesters gathered near Gandhi’s statue near Maurya circle in the city and demanded that the BJP MLA should be arrested immediately.

The protesters alleged that Reddy’s remark were aimed at inciting communal hatred and that his remarks do not do justice to his being an elected representative of the people in the state assembly.