Bengaluru doesn’t need more industries; time to shift to Tier-II cities like Mangaluru: HDK

Brahmavar, Jul 3: Two friends drowned accidentally in a rivulet while catching fish near Barkur in Brahmavar taluk of Udupi district today.  

The deceased have been identified as Karthik (20), a final year B.Com student, and Harsha (26), who was working as a recovery agent for a local finance company. Both were local residents. 

The incident took place around 8 a.m. when they were trying to catch fish. Even though a few locals were there on the spot they could not save the duo as the water level has increased in the rivulet due to rains. After an hour the bodies were fished out. 

A case was registered at Brahmavar police station and investigations are on.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 22: On the direction of the Karnataka government, private medical colleges in Dakshina Kannada have reserved 4,000 beds for the treatment of Covid-19 infected patients.

With this, the district will have a total of 4,720 beds for the treatment including that from the government set up.

The district administration has directed the eight private medical colleges to reserve 50 of its beds for treating the infected patients. Accepting the direction of the district administration, the management of medical colleges have submitted details on the beds reserved to the authorities concerned.