Mangaluru: Madrasa student stabbed by bike-borne miscreants near Konaje

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangalore, Jun 3: One man was arrested by the Crime Branch of city police from Mangalore for allegedly having links with gangster Ravi Pujari, Joint Commissioner of Police (Crime) Sandeep Patil said on Wednesday.

According to the police, the man identified as Ghulam has been sent to 10-day police custody.

"During the investigation of a case related to Ravi Pujari, it was found that one Ghulam is a close associate of Pujari and had helped him in extortion and other illegal activity. Ghulam was arrested from Mangalore. He was produced before a court and sent to 10-day police custody," Patil said.

The senior police officer said that further investigation is on in the matter.

Pujari, who was wanted in several cases including ones related to heinous crimes like murder and extortion, was brought to Bengaluru earlier this year from Senegal. He had reportedly gone underground two decades ago and had allegedly been carrying out illegal activities from abroad.

Bengaluru, Feb 12: Mohammed Nalapad, son of Karnataka Congress MLA NA Harris, who allegedly rammed his sports car into vehicles and a kiosk, injuring 4, on Bellary road in Bengaluru on February 9, said that he was not in the car which met with the accident.

Bengaluru Joint Commissioner of Police, Traffic, Ravikante Gowda told media, "Mohammed Nalapad appeared before the investigating officer today. He was arrested following interrogation. We are collecting evidence and will file a charge sheet shortly."

Nalapad is out on bail, in connection with the matter where he had assaulted a man in a pub in Bengaluru in 2018.

"I was not in the car which met with accident. I was travelling in a Lamborghini car which was moving ahead of the car. However, I called people to rescue the victims. We took them to the hospital and paid their hospital bill," said Mohammed Nalapad.

Further, details are awaited

Also Read: MLA N A Harris’ son Nalapad, out on bail, now crashes his luxury Bentley car, injures 4