Saudi King orders to pay unpaid salaries; SR100 million to be deposited

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 8: Tyavarekoppa Tiger and Lion Safari in Shivamogga re-opened on Monday at 9 am.

Zoo authorities said that they are ensuring that all standard operating procedures are being followed, including ensuring social distancing and wearing of masks by visitors.

It is being ensured that pairs of birds are being kept inside enclosures.

Regular sweeping and spraying on the premises are also being taken care of, authorities said.

Floor markings have been made at the ticket counter to maintain social distancing.

Bengaluru, May 17: Amidst mounting demand form Kannadigas across the world for repatriation flights in the wake of covid-19 lockdown, Dr Arathi Krishna, former Deputy Chairman of the NRI Forum of Karnataka government, has written to Hardeep Singh Puri Minister of Civil Aviation to operate more special flights to Gulf repatriate Kannadigas from gulf countries. 

Dr Arathi Krishna’s first request in the letter was to add flights from Kuwait, Bahrain and Jeddah to Bengaluru as many (from Karnataka) are stranded in these cities in precarious situations.

In addition, she also requested for a couple of flights from Dammam and Riyadh to Bengaluru as there are more than 3780 Kannadigas registered to return from Saudi Arabia and members of Bearys Chamber of Commerce and Industry are requesting the same. Any number of flights from Dubai to Bengaluru and Mangaluru will also help the stranded people, the letter stated. 

“Old and sick people, pregnant women and others are in urgent need to connect with the world are looking up to you for getting flights from different comers of the world. Indian communities are hopeful that you will use your position to help them to get the much needed mobility at this time,” the letter stated. 

She also said that the people in Karnataka are grateful to you (Mr Hardeep Singh Puri) for adding two flights from Dubai to Bengaluru in the last two schedules and one flight each from Riyadh, Dammam, Muscat and Doha.

Dr Arathi Krishna is currently serving as the Chairman of the NRI Cell of Karnataka Pradesh Congress Committee and Secretary of Indian Overseas Congress.