Uprooted tree blocks NH 73 between Mangaluru and Chikamagaluru

Mangaluru, Apr 27: Two more people including an elderly woman have been tested positive for the novel coronavirus in Dakshina Kannada. 

With this the total number of covid-19 cases in the district reached 21, though most of them have recovered and returned home. 

In its today's bulletin, the health and family welfare department confirmed that a 45-year-old man and his 80-year-old mother tested positive for the deadly disease. 

It is learnt that one of them had undergone treatment at a private hospital where a woman from Bantwal, who died of covid-19, was being treated for breathing difficulties, before she was shifted to Wenlock Hospital which is now converted into covid-19 hospital.

Bengaluru, Jan 23: City civic body Bruhat Bengaluru Mahanagara Palike (BBMP) levied a penalty of Rs 50,000 on the Karnataka State Cricket Association (KSCA) for using single-use plastic cups during the recent India-Australia one-day international match at the M Chinnaswamy Stadium in Bengaluru.

"Despite many awareness meetings, BBMP has found that single-use plastic cups were used during yesterday's cricket match and has fined KSCA Rs 50,000 as penalty," tweeted the civic body commissioner BH Anil Kumar.

The state cricket association treasurer Vinaya Mruthyunjaya said the civic body gave a general notice without detailed information on plastic use.

"We have been environmentally friendly for the last many years and at all gates, security has made sure no plastic or flex was allowed inside the stadium," Mruthyunjaya told media.

Mruthyunjaya said KSCA sought information from the civic body as to where the single-use plastic cups were found in the stadium during the India-Australia match.

On January 16, KSCA president Roger Binny inaugurated a plastic bottle shredder at the Chinnaswamy Stadium, in addition to other green initiatives at the cricket ground such as solar panels, sub-air system, biogas unit, rainwater harvesting and others. 

Similarly, in December 2019, BBMP cracked down on popular fast food eatery – Adyar Anand Bhavan in HSR Layout and fined the establishment Rs 1 lakh for plastic use.

In October, the BBMP fined eateries including McDonald's in central Bengaluru for using plastic.

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