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Bengaluru, Jul 21: Leader of Opposition and former Chief Minister of Karnataka Siddaramaiah on Monday attacked the ruling government and said press conference of Health Minister B Siramulu was more like an exercise to hide facts than presenting proof with accurate data.

"Got to know about the press conference addressed by B Siramulu and Dr Ashwathnarayan CN to clear accusations of corruption. It looked more like an exercise to hide facts than presenting proof with accurate data," Siddaramaiah tweeted.

"It is still unclear about the points presented in the press conference. They have not answered any of my questions which were raised earlier. I will respond in detail once I receive the written explanation from the govt. Minister has claimed that both Health & Medical education department together have spent Rs323 Cr. But the data presented by them does not even add up to Rs100 Cr. What happened to the rest of the money?," asked Siddaramaiah.

He said that Centre has procured ventilators at Rs4 lakh per unit under PM Cares. But only in our state, the ventilators are procured at Rs12-Rs18 lakh per unit

"Prime Minister's Office has procured ventilators at Rs4 lakh per unit under PM Cares. But only in our state, the ventilators are procured at Rs12-Rs18 lakh per unit. Why do we see such a huge difference in price? Ministers, in the press conference, have told that quality & technological capabilities are the reasons for huge price difference. Does it mean ventilators under PM Cares lack quality? Why did they not present the technical specifications to justify the same?" he asked.

"Not just about the procurement of medical equipment, I had even asked data about food kits, PDS distribution, beds procured, quarantine centres & isolation wards. Where is the data for that?" he asked in a series of tweets. 

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Thiruvananthapuram, Mar 18: Bindhu Sampath, the mother of Nimisha alias Fathima who travelled from Kerala to Afghanistan to join the Islamic State (IS), has sought the Central government's help to bring her daughter back to India.

"I saw a video of my daughter in which she was requesting her return to India. She has realised that India is her country, not Afghanistan. She is scared that she'll be put in jail over there. Responding to my mail, the Afghanistan government has said that the procedure will take time," said Bindhu Sampath.

"I believe in Indian laws. Let her be questioned and realise what is good or bad. I am waiting for the Central government's confirmation on the matter," added Sampath.

Around four years back, a team of 21 members which consisted of couples and children went to Syria from Kerala to join ISIS and lead an Islamic life. After they left, police registered a case against them, which has been handled by the National Investigation Agency.