Bharat bandh evokes good response in Manglauru, Udupi

Mangaluru, Feb 10: Life of a 40–year-old man, who suffered a massive cardiac arrest, was saved by an ambulance driver who covered 80-km distance between Dharmasthala and Mangaluru in just 40 minutes.

The patient, a Chikkaballapur native sustained a heart attack near Sakleshpur on Saturday while he was on his way to Dharmasthala. He was provided preliminary treatment at a private hospital in Ujire, where doctors advised his relatives to shift him to a hospital in Mangaluru immediately.

The patient’s condition was critical and the odds were completely against him. Moreover owing to the ongoing double lane project work, the road too had been dugout. Despite all this, ambulance driver Hameed drove at a fast pace and managed to take the patient to the hospital within 40 minutes.

Bengaluru, Jul 19: A total of 4,120 new COVID-19 cases were reported from Karnataka on Sunday, taking the total number of 63,772 in the state, informed the state's health department.

Out of the total cases reported in the last 24 hours, 2,156 were reported from Bengaluru.
The total figure includes 39,370 active cases, 23,065 recoveries, and 91 deaths.

"Karnataka crossed the 10-lakh-tests milestone today. So far, we conducted 10,20,830 tests across 88 labs in the state and 35,834 tests today," Minister for Medical Education of Karnataka tweeted on Sunday. 

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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