AIE new international schedule; Mangalore- Mumbai flights withdrawn from May 27

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 20: A teenage girl drowned after a boat in which she was traveling in capsized in the river Netravati at Uliya Hoige, Ullal, police said on Monday.

Meanwhile, four other girls who were also traveling on the same boat were rescued by the locals, the police added. The mishap happened on Sunday.

The deceased has been identified as 18-year-old Renita, a resident of Miyapadavu.

Mangaluru, Feb 11: Renowned journalist and winner of Magsaysay award, P Sainath will be in Mangaluru on February 14 & 15 at St. Aloysius College (Autonomous). He will speak on the topic ‘Indian democracy in post liberalisation and post truth era’.

P Sainath’s two-day visit to St. Aloysius College will also feature a workshop by the veteran journalist on his rural development project PARI (People’s Archives of Rural India). It is a part of the tenth edition of Media Manthan, a National level media fest organised by the post-graduate department of Journalism and Mass Communication of St. Aloysius College.

P. Sainath is a veteran journalist and media activist who has an avid interest in rural reporting. People’s Archives of Rural India (PARI), a digital journalism platform is an initiative put forward by him which aims to document rural Indian lives and livelihood. Sainath is also a teacher who has trained over 1000 media persons across 27 years.

Media Manthan is a media festival by the PG Department of Mass Communication of St. Aloysius College (Autonomous). Besides endowment lecture and workshop by P. Sainath, the fest holds various media-related competitions for the students of various colleges from across the state.