57-yr-old woman dies protesting against CAA, NRC at Park Circus

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 27: Amid fear of coronavirus spread, the District Collector on Friday ordered the closure of the city’s major fishing area Dhakke.

''The fish caught by us on Wednesday were dumped, without being sold'', fishermen said. Meanwhile, a few them obtained police permission and took the fish to the nearby fish mill.

All the boats which had gone for fishing are back to the dock and the port is deserted. Also, the fishermen who went fishing have been advised to return.

Mangaluru, June 29: An elderly man, who was under quarantine at a lodge was inhumanly dragged on the floor and abandoned on the roadside by his own son. 

The shocking incident occurred in broad daylight at Deralakatte on the outskirts of the city today. 

The father and son are said to be natives of Uppala in Kasaragod district. The duo stayed in a hotel room at Deralakatte after returning from Mumbai a few days ago. 

Today the son dragged his father mercilessly on the floor and escaped after abandoning him on the road side. A CCTV camera has captured the incident. 

The jurisdictional Konaje police are trying trace the miscreant.