Mangaluru: Activist Vidya Dinker bags Lawrence Pinto Human Rights Award

Mangaluru, May 12: The Karnataka government has ordered that Dakshina Kannada and Udupi districts be considered as one unit for the movement of people to undertake permitted activities between 0700 hrs to and 1900 hrs.

Principal Secretary and Member Secretary, Karnataka State Disaster Management Authority, T K Anil Kumar, in an order, said that there was no need for different passes for commuting by people between these two districts.

However, people should carry their identity cards issued by their respective enterprises/ companies to show that they are carrying out permitted activities only, he said.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 10: Techies living in a Whitefield apartment block where the city's first Coronavirus patient was residing have been asked to work from home.

The Karnataka government is in touch with the heads of IT and ITES companies, some of which are said to have asked their staff to work from home.

Deputy Chief Minister Dr C Ashwath Narayan, who also holds the IT and BT Portfolio, said the government had directed the companies to explore giving their employees the work-from-home option.