Mangaluru: Cyclists pedal through city to save Netravati amidst bandh

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Davanagere, Jan 16: Congress leader D K Shivakumar on Thursday turned down all the recent media reports of him aspiring for the coveted Karnataka Pradesh Congress Committe (KPCC) president post.

Terming all the news, doing rounds, as baseless, Shivakumar said that he never made any attempt to become KPCC president. "All I want to do is work for my people and party", he asserted.

Referring to Chief Minister B S Yediyurappa's visit to Harihar's 'Our Lady of Health Minor Basilica' programme, Shivakumar said."I'm not concerned about what others are doing, everyone is free to take part in the programmes."

Bengaluru, Jun 29: Former Karnataka Chief Minister Siddaramaiah along with Congress leaders on Monday rode a bicycle from his residence to Minsk Square to protest against the hike in fuel prices.

KPCC President DK Shivakumar was also seen riding a bicycle along with other members of the Congress party to Minsk Square where the party staged the protest.

During the protest, Siddaramaiah and Shivakumar along with party leaders carried a bike on their shoulders.

"We are carrying out our duty today. At the time of the UPA government's rule, when there was any hike in fuel prices, several BJP leaders had made bold statements. It is ironic that today, at the time of this COVID-19 pandemic, even despite the price of barrels falling, they have increased fuel prices," said Shivakumar.

"In Delhi, diesel prices have exceeded petrol prices. We must protest against this. The DCP can file whatever case he wants to. Despite several cases against us, we have never been shaken up. They are inconveniencing people and causing the people to burn in hell. These people must be protected," he added.

With the hike in fuel prices, the petrol prices stand at Rs 83.04/litre (increase by Rs 0.05), and the diesel prices stand at Rs 76.58/litre (increase by Rs 0.13) in Bengaluru, according to a price notification of state oil marketing companies.

The Congress has termed the increase in the prices of petrol and diesel as "unjust" and "thoughtless", and urged the Central government to roll back the increase with immediate effect and pass on the benefit of low oil prices directly to the people.