Four PFI activists briefly detained for trying to hoist flag

Bengaluru, Mar 23: Deputy Chief Minister Laxman Savadi cautioned private bus transport services operators, taxis and autorickshaws from exploiting commuters in wake of bus and train services being suspended by the government as precautionary measures to prevent the spread of COVID-19.

In a statement released here on Monday, Transport Minister Savadi said it has come to the notice that private buses, taxis and autorickshaws were misusing the opportunity and exploiting commuters. Inter-district bus services have been suspended in the districts wherein lockdown has been announced to protect the health of people and none should violate the decision of the government, he stated.

Transport and Police Department officials have been asked to taken action against those violating norms and exploiting commuters. Service providers for their profit cannot risk with the health of the people and repeated cases if come to the fore, they will not be spared, Savadi cautioned.

Government has taken measures to prevent spread of COVID-19. Private transport service providers and people should join hands and cooperate to contain it, he appealed. 

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 29: Even as the thousands of Indian expatriates in Saudi Arabia are waiting for repatriation flights to return to India, a few NRI entrepreneurs are sending home their employees through chartered flights. 

The government of India on May 21 had formally approved the repatriation of stranded Indian expatriate workers through chartered flights arranged by their employing companies particularly in Gulf region and elsewhere. 

Expertise Contracting Co. Ltd headed by K S Sheik and Al-Muzain Est. headed by Zakaria Jokatte are among those who have hired charter flights to repatriate hundreds of employees to India amidst corona lockdown. 

Mr Sheik said that his firm had applied for nine charter flights. "Two of the charter flights will carry 360 people to Mangaluru. Seven other flights will repatriate employees to Delhi, Thiruvananthapuram, Chennai and Hyderabad," he said, adding that the company will bear complete expense of their repatriation and quarantine facility after India. 

Mr Jokatte three charter flights will fly from Dammam to Mangaluru International Airport on June 2, 5 and 8 carrying their employees.