Mangaluru | Cyanide Mohan convicted in 20th case

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 23: As many as 600 people who arrived from foreign countries are under the surveillance of the district police in the Dakshina Kannada, as a measure to contain the spread of Covid-19, said Superintendent of Police B M Laxmi Prasad on Monday.

The police personnel are visiting their houses in Dakshina Kannada police jurisdiction. They have been asked to remain quarantined at home for 14 days."We have appealed to the local residents to tip the police if they violate the quarantine period,"he added.

Talking to newsmen here, he said that all the roads in border areas connecting Kerala had been closed, the police have strengthened security in border areas. Please log in to get detailed story.

New Delhi, Mar 2: The bloodthirsty arsonists allegedly hired by pro-CAA politicians in the capital of India to target Muslims, did not spare even the house of a Muslim leader of BJP.

Akhtar Raza, the BJP’s minority cell vice-president for the Delhi Northeast district, is now not in a position to share his pain with anyone. 

Even the police hadn’t come to his rescue, when the mob raising “Jai Sri Ram” slogans burnt down his house at Bhagirathi Vihar Nalla Road in northeast Delhi last week. 

“They were chanting slogans. Around 7pm, they started throwing stones at us. I called for police help. But the police asked me to leave. We managed to flee before they burnt my house and destroyed everything,” Raza, who returned today to witness the destruction, told media persons. 

“Those who attacked us were not locals. They were outsiders. They managed to identify and burn down all the 19 houses belonging to Muslims in this lane,” Raza said.

Apart from all the belongings in the house of Raza, the arsonists also have burnt down six vehicles belonging to his family. 

Raza is sad that no one from BJP contacted him after the violence even though he has been serving the party and promoting its ideology for past five years. “No party leader contacted me. There was no phone call. There was no relief or special treatment or anything,” Raza said.

Interestingly, Raza is still indentifies himself as a BJP leader. “I belonged to BJP. I may continue in the party,” he said.

The locality remained tense on Sunday too. On Monday, several groups distributed relief materials among people who had queued up to collect them. In front of Raza’s house is a lane from which several bodies of innocent Muslims have been recovered.