I-Day lie exposed: Village mentioned by PM Modi still without power!

Mangaluru, May 18: The coastal city of Mangaluru and other parts of twin districts of Dakshina Kannada and Udupi are receiving heavy rain coupled with lightning and thunder.

The rain, which started in the wee hours, continued to lash for hours. It brought much relief from the sweltering heat.

Waterlogged roads in different parts of Mangaluru cause inconvenience to motorists. The clouds were so dark that the drivers were forced to switch on the headlights while driving vehicles in the morning.

The IMD has predicted heavy rain in the coastal Karnataka for next two days.

Lighting claims a life

Meanwhile, a youth died after lightning struck him at Paduyenagudde in Katpadi of Udupi district on Sunday late night. The deceased was identified as Bharat. Though he was rushed to the hospital, he failed to respond to the treatment.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 11: Amid rising COVID-19 cases in the district, the officials of Pilikula Zoological Park are also following quarantine policies for animals similar to those for people arriving in the state from other places.

Zoo officials said that these rules apply only for animals that are brought from other locations.

The officials are keeping animals brought in a separate room for one to two months and their health is monitored by expert Doctors. If there are no symptoms of any diseases, the animals will be clubbed with other Zoo animals.