NITK's doctoral student arrested for wife's death

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bengaluru, July 15: The family members of a 67-year-old man, who had developed some symptoms of Covid-19, was in for a rude shock when a “reputed” private hospital in Bengaluru’s Whitefield quoted estimated bill of Rs 9.09 lakh for 10 days.

The elderly man was rushed to Columbia Asia Hospital even before receiving his covid-19 test report. But after a look at the estimated bill, the family chose not to admit him there.

The break-up of the estimated bill included Rs 1.40 lakh for ventilator, Rs 3 lakh for medicines, medical supplies and consumables, Rs 2 lakh for laboratory investigations, Rs 75,000 for room rent, Rs 75,000 towards professional fee, Rs 58,500 for nursing charges, Rs 35,000 for radiology investigations and physiotherapy, and Rs 25,000 for equipment and surgical items.

The hospital authorities reportedly told the family members that the actual bill could be higher in the event of complications, unanticipated extension of stay and comorbidities.

“He was tested on Sunday and we were waiting for the result. On Monday, he started gasping for breath. Columbia Asia Hospital told us they had an ICU bed and we rushed him to the emergency care. When they showed us the estimate, we were shocked,” said Abdul Bashir, a nephew of the patient.

“We then contacted Dr Taha Mateen of HBS Hospital through an NGO ‘Mercy Mission’. We got him admitted there for just Rs 25,000,” he said adding that Hospitals should not take advantage when emotions are running high. 

Bengaluru, May 12: About 101 labourers bound for Rajasthan from Bengaluru in a goods truck were detained near a border Checkpost at Hirebagewadi village in Belagavi taluk on the Pune-Bengaluru national highway and have been sent into institutional quarantine on Tuesday.

Police said that the Labourers comprising of men, women and children had been travelling towards Rajasthan in a goods truck without permission from Karnataka and even from their home State Rajasthan.

In the morning hours, police and other department personnel manning the check post near...check post near Hirebagewadi detained them.