Salafi preacher booked for creating divide between Hindus and Muslims

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mysuru, Jan 20: A 100-member team of National Security Guards (NSG) has arrived in the city for bolstering security measures in the tourist centre and to demonstrate the preparedness of the elite force to tackle any exigency in the region.

The annual maintenance of the Mysuru Palace will be taken up on Monday and the NSG commandos are expected to give suggestions and directions for improving the security at the place. It is also said that the commandos may visit Mysuru airport.

It is also said that the commandos may visit Mysuru airport. According to sources, from the Palace Board, the team of commandos reached Mysuru two days ago and interacted with the officials and engineers of the Palace Board.

Mangaluru, Jan 1: On the first day of 2020, Bajpe Police became somewhat of a Guardian Angel for a college student, who was wandering around the city in the wee hours of Wednesday, convincing and escorting him to his home safely, after coming to know about his residence.

According to Bajpe Police Probationary Sub-Inspector Anita Nikkam and Police Officer Devappa Hosamani, they noticed a youth, hailing from Handelu in Todaru and studying in a college at Moodbidri, wandering at around 0245 hrs.

When asked about his whereabouts, the boy did not respond initially. However, police managed to collect his address and his mother's phone number after half an hour of interrogation.