EC issues show cause notice to Sakshi Maharaj

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Udupi, July 17: An Indian expatriate from coastal Karnataka who was working in Kuwait passed away in a hospital in the oil-rich country reportedly due to covid-19.

Sheikh Mohammed Syed (54) was a native of Kharvi in Kundapura taluk of Udupi district. He is survived by his mother, wife and three daughters. 

An ex athletic champion from Bhandarkars' Arts & Science College, he was a well-known Volleyball and Kabaddi player in Kundapur.  He was associated with many sports associations in Udupi. 

An employee of KRH firm, he was hospitalized in Kuwait three weeks ago due to ill health. He was tested positive for covid-19.

He breathed his last yesterday without responding to any treatment. Final rites were held in Kuwait. 

Prior to migrating to Kuwait, he had worked in United Arab Emirates for several years. A sports enthusiast, he had trained many athletes in Udupi.

Thiruvananthapuram, Jun 25: The government of Kerala under the leadership of Chief Minister Pinarayi Vijayan is all set to launch the 'Kerala Dialogue' -- a debate series on new concepts and development models during the COVID-19 pandemic.

A series of visionaries including noted political thinker Noam Chomsky and Nobel-laureate economist Amartya Sen will join this unique initiative that is to be rolled out from Friday.

The debate series to be inaugurated by the CM will feature prominent personalities from various walks of life including scientists, philosophers, diplomats, economists, writers, journalists, activists, technocrats and people's representatives.

The first episode will have Chomsky, Sen and WHO Chief Scientist Dr Soumya Swaminathan speaking on 'Kerala - Future Paths of Development'. 

State Planning Board vice chairman VK Ramachandran and senior journalist N Ram would be the moderators. The first episode would be telecast through the Chief Minister's official social media accounts.

The coming episodes in the series will also be telecast in the same manner. The government is of the view that the Kerala Dialogue series can ensure debates and dialogues on sustainable and inclusive development on the lines of the Kerala model.