Youth Congress leaders in Dakshina Kannada resign en masse over ticket denial to Mithun Rai

Bengluru, Apr 20: Lockdown restrictions have been extended by a day by the Karnataka government, in an order issued by chief secretary TM Vijay Bhaskar on Sunday.

The order directed all heads of departments, district deputy commissioners and superintendent of policies to "continue to implement the measures presently in force" as per Ministry of Home Affairs guidelines dated April 14, "till the midnight of April 21, 2020."

The MHA guidelines had earlier allowed the state government to relax lockdown norms post-April 20.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Shivamogga, Jun 30: The organic farmers' market in Shivamogga in Karnataka has seen a rise in the demand for organic fruits and vegetables in the midst of the COVID-19 pandemic.

Residents of nearby areas frequently visit the market to get fresh produce.

According to Sridhar, a farmer who sells his produce in the market, the demand for organic fruits and vegetables was very low before the coronavirus outbreak.

"I have been involved in organic farming for the last two decades but there was no real market. Since these days everyone is trying to boost their immunity, we are getting a lot of positive response from the locals," he told news agency.

Sridhar and other farmers come from villages near the city. They are authentic organic farmers under the Vikas Trust and Savayava Krishi Parivar, a federation of organic farmer's families based in Karnataka, and they promote pesticide and fertiliser free agriculture.

Gurumel Singh, who often comes to the local market said, "My family has started eating more organic fruits and vegetable now because of the pandemic. We have been told it is important to take care of our health and organic fruits and vegetables are good immunity boosters. The fruits I buy from the organic market are also much sweeter than the ones I get elsewhere."