Born twice? PM Modi's MA document creates more controversy!

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 10: Internet connectivity, provided under the central government's BharatNet initiative, will be improved in rural areas of Karnataka in the next two to three months, said Deputy Chief Minister CN Ashwath Narayan.

After video conferencing with heads of different agencies and officials, on improving the quality of internet in rural areas, Ashwath Narayan said, "I reviewed the progress of the BharatNet implementation and the steps to be taken to improve the quality of internet connectivity in the next two to three months."

"We also discussed the possibility of giving the implementation of BharatNet to a different agency. We will seek permission from the central government and continue the project. We will ease communication with rural people by ensuring quality and high-speed internet to all Gram Panchayats," he added.

When BSNL officials and other agency representatives who attended the video conference shared their problems, the Deputy Chief Minister assured to solve them through proper coordination.

"Through BharatNet, several government schemes are being implemented in rural areas. Civic service centres are issuing birth and death certificates, Aadhaar cards and social security pensions among others. Of the total 6,000 Gram Panchayats in the state, 4,000 have high-speed internet connectivity, and the remaining will be provided with better internet connectivity through a new agency,'' said Ashwath Narayan.

Additional Secretary (e-governance) Rajeev Chawla, Additional Chief Secretary (IT-BT) EV Ramana Reddy, Principal Secretary (RDPR) Uma Mahadevan, Director (IT) Meena Nagaraj, Collegiate Education Director Pradeep and other senior officials were present in the meeting.