HJV leader Jagadish Karanth arrested over communal remarks against Puttur cop

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, July 23: Lavanya Ballal, national co-coordinator for social media department of Indian National Congress, has accused the Bharatiya Janata Party of destroying the nation by misleading the youth.

In an interview with a regional Kannada news paper, the Dakshina Kannada based activist, lamented that instead of using social media for the welfare of the nation, BJP leaders used it to spread lies for their political gains. 

On one hand BJP fooled people through false promises and colourful dialogues, while on the other hand it misled crores of youth by spreading fake news, twisted facts and false information, she said.

Ms Ballal went on to accuse BJP of following the footsteps of the British. “BJP is following all the methods employed by the British invaders to divide the people of India and make them hate each other,” she said.

She said that Congress always used the social media for the benefit of the country. If the new generation realises this fact, the country will once again turn its direction towards development, she asserted.

Bengaluru, Apr 30: The Karnataka government on Thursday decided to allow migrant workers, tourists, students and others stranded in different parts of the state due to the ongoing lockdown to return to their native places, a day after the Centre issued guidelines for the process.

This will be a one-time movement and the government would arrange buses for those in need but they should bear the expenses, Law and Parliamentary Affairs Minister J C Madhuswamy said. He also said people willing to return to the state would have to undergo tests for COVID-19. The decision was taken at the state cabinet meet and it might come into effect from Friday as the Chief Secretary will have to issue an official order, he said.

"Prime Minister Narendra Modi had taken decision on movement of people and the Centre had issued a circular in this regard. Following this we have decided to permit interstate and inter-district movement," he told reporters here.

Travel expenses should be borne by those willing to return and if they want the government can provide buses from the state transport corporations. The Union Ministry of Home Affairs on Wednesday issued orders allowing migrant workers, tourists, students and other people stranded in different parts of the country to move to their respective destinations with certain conditions, giving a big relief to the distressed people. Decision on opening of salons and liquor shops will be taken after May 3, he said.

Madhuswamy said permission would be given for one-time movement of labourers and others who want to go from one district to other for work or any other purpose. Those operating industry or establishment and want to move from place to place for management purpose will be given passes with strict scrutiny and through checks.

Responding to a question, the minister said, "we don't know yet how many are willing to go, where they will go, if some one asks for permission, we will permit." "One family or two or three people want to go, they can use taxi. If too many people want to go, we will provide facility through transport corporation buses," he said.