MCC, giant industries to repair Suratkal-Kana-MRPL road jointly

Bengaluru, Apr 11: Seven more people have tested positive for coronavirus taking the tally to 214 in the state.

"Coronavirus cases rise to 214 in Karnataka, with seven more people testing positive between 5 PM Friday and 12 PM Saturday," said the Karnataka health department.

According to the health department, all these seven people have a history of contact with COVID-19 patients. Five of them are workers of a pharmaceutical company in Mysuru.

"Out of the total cases in the state, six people have died while 37 others were cured or discharged," added the state health department.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Tirumala, Jul 16: As many as 14 priests of Tirumala Tirupati Devasthanams (TTD) were tested positive for COVID-19 in Andhra Pradesh on Thursday, said Anil Kumar Singhal, Executive officer, TTD.

Singhal also held a meeting with temple priests, health and vigilance officials today.

On July 14, Singhal held 'Dial your EO' programme at TTD administrative building conference hall wherein the EO addressed the devotees and media and informed that 91 TTD employees have tested positive for COVID-19 till date.

According to the Union Health Ministry, the state has reported 35,451 COVID-19 cases including, 16,621 active cases, 18,378 recovered and 452 deaths so far.