Spectacular formation of UAE human flag at KSCC fitness challenge closing ceremony

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 7: Customs officials intercepted a Guatemalan national at Kempegowda International Airport here on March 2 and recovered cocaine.

The accused confessed that she had swallowed 150 cocaine capsules and concealed a tube-like structure in her vagina.

The passenger egested the total 1.385 kg of cocaine (150 cocaine capsules) over a period of two days, under medical supervision. She has been arrested.

Further, an investigation is underway.

Bengaluru, Apr 2: In a bid to discourage people from coming out on roads during the lockdown, Bengaluru Traffic Police have inscribed a message that reads, "If you come to road, I'll come to your home."

It was written on the road at Nagenahalli check-post. The message was written by the cops in the regional language.

Meanwhile, nine fresh cases were reported in Karnataka with the count rising to 110 in the state on Wednesday.

Out of the total cases, three persons died due to the virus while nine others have been discharged after recovery.

"COVID-19 cases climb to 110 in Karnataka, with nine fresh cases being reported between 5 pm yesterday and 2 pm today. Out of the total cases, three have died while nine others have been discharged," a bulletin issued by the state health department said.

"Out of 110 cases detected and confirmed in Karnataka so far, seven cases are transit
passengers of Kerala who have landed in our airports and being treated in
Karnataka," it added.

The Union Ministry of Health and Family Welfare on Wednesday said that there are 1,834 coronavirus positive cases in India, including 1,649 active cases, 144 cured/discharged/migrated people and 41 deaths.