Udupi: Sri Krishna Mutt to host Zakir Hussain’s concert

Bengaluru, Jun 25: A total of 442 new cases of COVID-19 were reported in Karnataka on Thursday taking the total count of cases in the state to 10,560.

According to the State Health Department, there are 3,716 active cases and 6,670 patients have been discharged after treatment. Six more deaths have been reported in the last 24 hours, taking the death toll to 170.

India's COVID-19 count reached 4,73,105 on Thursday with the highest single-day spike of 16,922 cases in the last 24 hours.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Feb 14: In a unique initiative, students of a government school in Dakshina Kannada have made a food stop in the campus to provide water and food to birds and squirrels.

The students have hung coconut shells on trees in the school premises with food and water in it for birds and squirrels.

Speaking about the same, the Principal of the school said: "Students are taking a lot of interest in the activity. Various types of birds visit the school campus, making the ambience very nice."

He added that he wants children to become socially and environmentally conscious. "The one area where children need to be given exposure is the protection of the environment, the upkeep of the campus and the greenery in and around their homes as well as in their schools."

Commenting on the recent initiative of the school's eco-club, he said, "Using this small idea, we can have a great beginning towards taking up bigger initiatives to take care of the environment."