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Bengaluru, Jul 10: Alarmed by the surging COVID-19 cases across the state, especially in Bengaluru, Karnataka Chief Minister BS Yediyurappa on Thursday urged the state capital’s residents not to visit their villages to prevent the infection’s spread.

“I urge the people of Bengaluru not to travel to their villages and prevent the infection from spreading in rural areas,” Yediurappa told reporters.

Admitting that the battle against the virus would be long, he said that the fight against COVID-19 could be won only through persistent efforts and with people’s cooperation with the frontline ‘warriors’.

“Combating the pandemic through preventive measures, providing treatment to the infected and saving lives are our priority,” he said.

With a record 2,228 positive cases on Thursday, the southern state’s COVID-19 tally shot up to 31,105, including 17,782 active cases, while 457 people have died of the infection till date, 17 just in the last 24 hours.

Of the new cases in the state, Bengaluru accounted for 1,373, taking its tally to 13,882, including 10,870 active, while 177 have succumbed to the virus since March 9.

No deaths were, however, reported in the city on Thursday.

Of the 457 patients in intensive care units (ICU) across the state, 292 are in Bengaluru hospitals.

Since unlock began on June 1, COVID-19 cases shot up to 15,242 on June 30 from 3,221 on May 31 and to 31,105 in 9 days since July 1.

Similarly, in Bengaluru, positive cases shot up to 4,555 on June 30 from 358 on May 31 and rose to 13,882 in 9 days since July 1.

The Chief Minister also appealed to all legislators of the ruling and opposition parties to give priority to contain the disease in their Assembly segments.

“Visit the COVID-19 designated hospitals and inspect if the required facilities are in place and bring any shortcomings to our notice,” the CM said

Mangaluru, May 27: Mangaluru MLA U T Khader today urged Dakshina Kannada MP and Karnataka BJP chief Nalin Kumar Kateel to pave the way for immediate repatriation of Mangalureans stranded across Gulf countries.

The development comes amidst reports that lack of preparedness on part of the authorities concerned in Dakshina Kannada compelled the Centre to delay the operation of repatriation flights from various Gulf to Mangaluru International Airport under Vande Bharat Mission.

Lakhs of people from Mangaluru region (coastal Karnataka) alone are working in middle eastern countries like Saudi Arabia, United Arab Emirates, Kuwait, Bahrain and Qatar. Thousands of them are currently stranded thanks to covid-19 lockdown and are helplessly waiting for repatriation.

Speaking to coastaldigest.com, Mr Khader said he already spoke to Mr Kateel and brought to his notice the plight of Mangalureans in Saudi Arabia and other gulf countries. "There are a large number of pregnant women, senior citizens and patients who need immediate repatriation. It is the responsibility of the elected representatives and district administration to pave the way for the repatriation of our people and arrange quarantine facilities for them," he said. 

"Mr Kaeel is not only MP of Dakshina Kannada. He is also the chief of Karnataka's ruling party. Hence, he must play a crucial role in facilitating the return of Kannadigas in general and Mangalureans in particular," Mr Khader 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