Siddaramaiah gifts his wife Rs 1.08 lakh 'water-proof' saree

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bengaluru, June 7: Promising Kannada actor Chiranjeevi Sarja died of heart attack in Bengaluru on Sunday. He was 39. 

The actor complained of severe chest pain and respiratory problems on Saturday. He was immediately rushed to Sagar hospital in Jayanagar, according to sources.

It is said that he suffered heart attack. Doctors attempted to revive him, but the efforts failed.

Chiranjeevi Sarja, the relative of mutlilingual South Indian actor, Arjun Sarja, had married Meghana Raj, the daughter of Prameela Joshai and Sundar Raj in 2018. He acted in 22 films. 

His throat swab sample have been sent for testing, added the sources.

He had started his career with Vayuputra in 2009. Shivarjuna, which was his last film, had released days before lockdown was imposed.

In October 2017, he was engaged to actress Meghana Raj. They married on 2 May 2018.

Bengaluru, May 11: Karnataka Medical Education Minister Dr K Sudhakar today held a video conference with Kerala Health Minister KK Shailaja to discuss measures to tackle COVID-19.

The ministers discussed in detail the protocols for testing, quarantine and treatment for COVID-19 that are being followed by both the states.

The Karnataka Health Department on Monday said that 10 new cases of COVID-19 have been reported in the state, taking the total number of positive cases to 858.

"31 people have lost their lives due to coronavirus in the state and 422 persons have been discharged after recovery," the Health Department added.

Kerala, on the other hand, has tackled the coronavirus crisis better than most other states of the country. There are only 19 active cases of COVID-19 in the state while 489 people have recovered. The death toll in the state is 4, according to the data published by the Union Ministry of Health and Family Welfare on Monday.