Belthangady: Trapped leopard rescued, released in forest

 Bengaluru, Jan 12: Two pilgrims from Bengaluru, who were siblings, drowned in sea off Auro Beach in Puducherry today.

The deceased have been identified as V Gauthman, 22, and his brother Vivek, 20.

Gauthman and Vivek were among a group of around 150 devotees from Bengaluru to the Adhiparasakhi temple at Melmaruvathur in Kancheepuram district of Tamil Nadu. They started their journey from Bengaluru in three buses on Friday.

After offering special puja at Adhiparasakthi temple and worshipping at a few other temples, they reached Auro Beach on Sunday afternoon. 

While they were having lunch on the beach, Gauthman entered the sea. He was caught in a huge wave.

Vivek, who tried to rescue his brother, too was caught in the wave.

Other pilgrims and fishermen began to search for them in fishing boats.

After an hour, their bodies were washed ashore, around two km from the spot.

The Auroville police retrieved the bodies and sent them for postmortem.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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