Mangaluru: Westline and MFAR together set a history in construction fraternity

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 2: Mangaluru BJP Corporator Manohar Shetty, who entered a manhole to clean a drain, said that he did it to avoid waterlogging ahead of monsoon as people were facing several problems for the past few years.

"In my ward, there is a rainwater drain at Kadri Kambla junction and for the past few years, there was a waterlogging problem due to trash water used to collect and vehicles used to find it difficult to pass in that area," Shetty said.

"Since there was a lot of trash it had to be cleared to avoid waterlogging. We changed our dresses, and then I along with my three party workers entered manhole and cleared the trash," he said.

The Mangaluru BJP Corporator further said that it was not a publicity stunt, and he cleaned the drain to solve the problem of people. "During elections, I had promised people to get the drain cleaned. Since monsoon was coming; something had to be done; we did not do it for publicity but to solve a problem," he said.

Bengaluru, May 9: A three-year-old boy was killed by a leopard in the early hours of Saturday in Magadi taluk near Bengaluru.

According to police, the boy identified as C Hemanth, was sleeping with his parents - Chandrasekhar and Mangalagowramma - outside his grandfather Chikkanna's residence at Kadaraiana Palya.

The couple, residents of Dodderi, near Big Banyan Tree (Dodda Alada Mara), had been staying at Chikkanna's [Mangalagowramma's father] residence since past a few days following the outbreak of COVID-19 epidemic in Bengaluru.

Some of the family members, with the child, had slept outside the residence on Friday as the temperature was high. The feline might have taken the child between 1.30 a.m. and 4 a.m., and killed it on the outskirts of the village, said the sources.

After a frantic search, family members and villagers found the mutilated body of the child in the early hours. The leopard had left the partially devoured body on the outskirts of the village, added the sources.

According to the villagers, many felines have been prowling in the area, probably arriving from forests around Magadi and attached areas, for the last several weeks.

The Forest Department officials said that they have launched an exercise to trap the animal by placing cages with live baits.

According to preliminary investigations, the child was killed by a leopard. Pugmarks were found near the body. A detailed investigation and post-mortem report will find the exact cause for the death.

The incident has sent shockwaves in the vicinity of the village. According to the sources, people are planning to launch a protest to condemn the killing of the boy.

Minister for Forest and Environment B.S. Anand Singh has announced a compensation of ₹7.5 lakh to the family of the victim.

Accompanied by Bengaluru Rural Lok Sabha member D.K. Suresh, Magadi legislator Manjunath and senior officials, Mr. Singh visited the place on Saturday morning.

Addressing media persons, he said that the department has decided to start combing operations for the leopard.

Mr. Suresh said the leopard might have come from Thippagondanahalli reservoir's catchment area on the outskirts of Bengaluru. The leopard has already tasted the blood of the child and hence the department should initiate immediate action [as the chances of the feline becoming a man-eater is high, Mr. Suresh added.