BJP justifies terror accused Sadhvi Pragya's remarks against Hemant Karkare

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 4: An engineering student has claimed to have received 600 threat calls in the past few days from unidentified people for starting fish business during the lockdown in Kavoor. 

According to Sakshath Shetty, resident of Kavoor, he started receiving threat calls from various people after he started selling fish during the lockdown. 

Police said they have been able to identify some of the numbers from where the threat calls were made and investigation is under way.

Bengaluru, July 13: As Bengaluru prepares for a seven-day lockdown from Tuesday following the spike in COVID- 19 cases, opposition parties in Karnataka have urged the government to enforce the measure in the entire state.

JD(S) patriarch H D Deve Gowda and Congress working president Eshwar Khandre have demanded that the entire state be placed under lockdown.

Welcoming the government's decision to implement the lockdown in Bengaluru Urban and Rural, Gowda said, "I urge the government through the media to enforce lockdown in the entire state."

The former Prime Minister in a statement appealed to people of the state and the entire country to wear masks while venturing out, maintain social distancing, clean hands with sanitizer regularly, and to come out only if there is necessary work.

Stating that allegations of misappropriation have been made by several leaders against the government in implementing measures and packages to control spread of the virus and its impact, Gowda said, "whatever it is let's discuss about it in the next legislature session, at present health of the people is important and let's focus on it."

The government should work in this direction, we are all with the government, let's not play with the health of the people, he said, adding that "I appeal that at least from here on work actively."

With a spike in Covid-19 cases, the Karnataka government on Saturday announced complete lockdown in Bengaluru Urban and Rural from July 14 to 22.

The lockdown is from 8 pm on July 14 to 5 am on July 22.

Congress leader Khandre, meanwhile reminded Chief Minister B S Yediyurappa that COVID cases and related fatalities were not only increasing in Bengaluru but also in the border districts of the state.

The situation was getting out of hand in Bidar, Kalaburagi, Yadgir, Raichur, Koppal, Ballari districts, he alleged.

"So implement strict lockdown once again in the state at least for fifteen days."

"Bring the situation under control. I appeal to the government that in this lockdown period at least to correct its past shortcomings and take all measures to face the pandemic efficiently in the future," he tweeted.

Meanwhile, Chief Minister B S Yediyurappa will be chairing video conference with Deputy Commissioners, Zilla Panchayat CEOs and Superintendents of Police of various districts regarding the COVID situation and the rains.

As of July 12 evening, cumulatively 38,843 COVID-19 positive cases have been confirmed in the state, which includes 684 deaths and 15,409 discharges.

Bengaluru Urban district tops the list of positive cases, with a total of 18,387 infections. Of the 2,627 fresh cases reported in the state on Sunday, a whopping 1,525 cases were from Bengaluru Urban alone.