Pampa award for poet KS Nissar Ahmed

Bengaluru, Jun 19: COVID-19 cases in Karnataka has breached the 8,000 mark, as the state on Friday reported 337 new cases and ten related fatalities, taking the total number of infections to 8,281 and death toll to 124.

Also, total discharges in the state breached 5,000 mark, with 230 patients getting discharged in a day after recovery.

As of June 19 evening, cumulatively 8,281 COVID-19 positive cases have been confirmed in the state, which includes 124 deaths and 5,210 discharges, the health department said in its bulletin.

It said out of 2,943 active cases, 2,865 patients are in isolation at designated hospitals and are stable, while 78 are in ICU.

The ten dead include- seven from Bengaluru urban, two from Bidar and one from Vijayapura.

Out of the 337 new cases, 93 are returnees from other states, majority of them from neighboring Maharashtra,while 11 are those who returned from other countries.

The remaining cases include contacts of patients earlier tested positive, those with history of SARI and ILI, among others.

Among the districts where the new cases were reported, Bengaluru accounted for 138 cases, followed by Kalaburagi 52, Ballari 37, Hassan 18, Dakshina Kannada 13, Davangere 12, Udupi 11; Bidar 10, six each from Mysuru and Koppal, four each from Yadgir, Kolar and Bengaluru rural, three each from Mandya, Dharwad, Chikkaballapura, Bagalkote and Ramanagara, two each from Tumakuru and Chikkamagaluru, and one each from Belagavi, Uttara Kannada and Shivamogga.

Kalaburagi district tops the list of positive cases, with 1,126 infections, followed by Udupi 1,050 and Bengaluru urban 982.

Among discharges Udupi tops the list with 944 discharges, followed by Kalaburagi 646 and Yadgir 477.

A total of 4,84,060 samples were tested so far, out of which 10,553 were tested on Thursday alone.

According to the bulletin,4,64,338 samples have been reported as negative, and out of them 9,862 were reported negative today.

Ballari, Mar 6: Ballari Deputy Commissioner S S Nakul on Friday said that two persons who had shown symptoms of COVID-19 had been admitted to the district government hospital here.

Informing this to the presspersons here, Mr Nakul said that the cases were reported from Jindal village of K R Hospital taluk and another one from Hospet town in Ballari taluk.

He said a suspect returned from Dubai to Hospet last week and showed symptoms of COVID-19. Both suspected patients were admitted to special isolated ward in Ballari government hospital and their throat swab tests taken on Thursday had been sent to lab in Bangalore to check for COVID-19.

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