Ram Nath Kovind not Dalit but OBC, claims Lalu Prasad Yadav

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 5: Karnataka Chief Minister BS Yediyurappa on Tuesday said that the coronavirus situation in the state is "under control" as compared to several other states in the country.

He also hinted that soon the construction and industrial activities would be allowed in the state except in the red zones.

"Coronavirus situation in the state is under control as compared to other states. Due to this, travel of migrant workers was prohibited. Now, trade, construction and industrial activities need to restart, except in the red zones," he told reporters.

According to the Karnataka Health Department, the state has so far recorded 659 COVID-19 cases, including 324 discharged and 28 deaths.

Bengaluru, April 3: Karnataka Chief Minister BS Yediyurappa on Friday held a meeting with Muslim leaders and legislators, seeking their cooperation in containing COVID-19.

In a press statement, the Chief Minister BS Yediyurappa said that the Muslim leaders have agreed to give details of persons who visited Tablighi Markaz in Nijamuddin and has also assured that they will convince the attendees to undergo tests for coronavirus and also follow quarantine rules.

CM Yediyurappa also informed media that the Muslim leaders are also advising the members of their community to offer prayers at home and also to stay indoors to maintain social distancing during "azan".

Also, an appeal has been made to the Muslim community to cooperate with the health workers during the treatment.

The Karnataka Chief Minister also appealed the masses not to pay heed to any sort of rumours pertaning to COVID-19. "Let all of us strictly follow precautionary measures and win the battle over caronavirus."