Mangalore University VC Prof. K Byrappa elected fellow of Royal Society

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, May 13: Dakshina Kannada today recorded its fourth death due to novel coronavirus.

The victim, identified by number P-536, is a 58-year-old woman from Boloor area of Manglauru. She was tested covid-19 positive on April 30. 

A patient with TB meningitis, the woman had been treated and discharged from Mangaluru’s First Neuro Hospital, which has emerged as covid-19 hub of coastal Karnataka.

In hospital she had reportedly come in contact with patient No 501 who worked as a sweeper in the same hospital. 

With this death, the number of active covid-19 cases reduced to 16 in Dakshina Kannada. The district has so far reported 34 covid-19 cases including four deaths. 14 have been discharged.

Bengaluru, Jul 26: A year-long probe by Coffee Day Enterprises Ltd (CDEL) has found that its late founder V G Siddhartha routed Rs 2,693 crore out of the company to Mysore Amalgamated Coffee Estates Ltd (MACEL), another privately-owned entity of him.

The MACEL owes Rs 3,535 crore to subsidiaries of Coffee Day Enterprises as of July 31, 2019 of which only Rs 842 crore was accounted.

"Therefore, a sum of Rs 2,693 crore is the incremental outstanding that needs to be addressed," said the report of an investigation headed by Ashok Kumar Malhotra, a retired DIG of Central Bureau of Investigation (CBI) and assisted by law firm Agastya Agastya Legal.

Siddhartha was found dead in early August 2019, and many suspected that he had committed suicide.

Steps are being taken by subsidiaries of CDEL for recovery of dues from MACEL, the company said.

"The board authorised the Chairman to appoint an ex-judge of the Supreme Court or the High Court, or any other person of eminence, to suggest and oversee actions for recovery of the dues from MACEL and to help on any other associated matters," it said in regulatory filings at stock exchanges late on Friday.

The probe further gives clean chits to the Income Tax Department and the private equity firms who Siddhartha in his parting letter had alleged of harassment.

"We have not been provided with any documentary evidence to draw an inference that there may have been any advertent or inadvertent harassment from the Income Tax Department," said the probe report.

The probe also highlighted severe liquidity crunch at CDEL in the build-up to Siddhartha's death.

A committee supported by senior professionals was formed to protect the interest of all stakeholders. CDEL said the debt levels which were about Rs 7,200 crore on March 31, 2019 have been brought down significantly by Rs 4,000 crore. The present debt of the group is around Rs 3,200 crore.

"The disinvestment process in the group continues and we are confident to have effective solution to all stakeholders," it said.