2 best teacher' award winners arrested in II PU paper leak case

Bengaluru, Apr 20: Close on the heels of the Padarayanapura vandalism, Karnataka Cabinet on Monday decided to promulgate an ordinance that gives special powers to implementing authority and also provide protection to frontline health workers.

Briefing media after the Cabinet meeting here, Minister for Law J C Madhuswamy said that the ordinance will be on the lines of one promulgated by Kerala and Uttar Pradesh governments.

“Through the ordinance, a State Epidemic Act will be enacted to protect health workers and any non-cooperation will be punishable. Also, any attempt to deliberately spread the disease or float rumours will attract action,” he added.

Udupi, Jun 2: As many as 150 persons tested positive for COVID-19 in Udupi district on Tuesday. This is the highest spike in COVID-19 cases in a single day in the district.

According to the district administration, all the 150 persons have travel history from Maharashtra. The number of COVID-19 cases has more than doubled when compared to June 1, when the district recorded 73 cases.

Deputy Commissioner G. Jagadeesha said here that of the 150 persons who tested positive, 120 were male and 30 female. This also included nine children aged less than 10. All these persons had been shifted to the designated hospitals for treatment.

He said that since 2,000 persons were tested in the last two days, 150 persons were found positive. Earlier, about 200 to 300 persons were being tested daily and about 10 to 15 used to be found positive. Nearly 10 % of persons coming from Mumbai/Maharashtra tested positive for COVID-19.

“We have 1,120 beds to treat COVID-19 positive cases in the district. Even after including these 150 persons, we still have 800 beds left. Hence, people need not panic. We will provide treatment for all affected persons,” Mr. Jagadeesha said.

With 150 cases on Tuesday, the total number of persons who have tested positive in the district since March has touched 410. There are 345 active cases.

As many as 63 persons who had recovered had been discharged from hospitals. There was one death due to the disease on May 14. The test reports of nearly 5,400 persons are still awaited.

The district had recorded only three COVID-19 cases from March 29 to May 14. But the number of COVID-19 cases started increasing from May 15.

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