Values declining in Indian politics: Pejawar seer

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 1: A Bengaluru Court has extended the judicial custody of Amulya Leona, who raised 'Pakistan Zindabad' slogan at an anti-CAA rally in Bengaluru's Freedom Park on Feb 20, till March 5.

Amulya was sent to 14-day judicial custody for her actions in the presence of All India Majlis-e-Ittehad-ul-Muslimeen chief Asaduddin Owaisi.

A sedition case has been registered against Amulya.

According to the police, a suo moto case under Section 124A (sedition), 153A and B (promoting enmity between different groups and imputations, assertions prejudicial to national integration) have been registered against the girl.

Udupi, June 10: Philanthropist and businessman Haji P K Abuswalih Kannangar passed away today at a private hospital in Mangaluru. He was 85. 

He was a resident of Pombathota house at Kannangar in Kaup taluk of Udupi district.

He was the proprietor of Green Store in Mudigere for past five decades and also was a coffee planter. 

He had served as the president of Muhayaddin Juma Masjid at Mudigere Hand-post in the past. He was also former president of Mudigere Taluk unit of Indian National Congress.