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Mangaluru, May 10: A delegation of Muslm community leaders called on Dakshina Kannada deputy commissioner Sindhu B Roopesh and discussed her about quarantine facilities for Indians returning from Gulf amidst covid-19 lockdown.

First evacuation flight from Dubai to Mangaluru will operate on May 12. Demand is mounting on the Centre to operate more flights from Gulf countries including UAE and Saudi Arabia.

International passengers will not be direct sent home after they land at any Indian airport. They will be divided into two categories. After screening at the airports, symptomatic will be sent directly to the covid-19 hospitals and asymptomatic and healthy will be sent for mandatory quarantine in designated hotel rooms and guest houses.

District administration has clarified that those who are under quarantine in hotels and guest houses will not be allowed to have outside food. Nor they will be allowed to contact anyone.

The delegation brought to the notice of DC that there will be many fasting Muslims among Gulf returnees and they need Suhoor and Iftar facility during Ramadan. The DC positively responded and assured that such facility will be arranged in the hotel rooms.

The delegation also asked about the claim of the officials of ministry of external affairs that delay in arranging quarantine facility in Karnataka delayed the evacuation flights from Gulf countries to the state. The DC said that the district administration has already made necessary arrangements for those who are coming to Dakshina Kannada.

Led by Mangaluru MLA U T Khader, the delegation comprised of JD(S) MLC B M Farookh, S M Rasheed Haji, Shafi Saadi, Mumtaz Ali, Kanchur Monu, B A Mohiuddin Bava, Ibrahim Kodichal, Rasheed Haji of Ullal Dargah and others.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, May 27: Karnataka’s twin coastal districts of Dakshina Kannada and Udupi today reported 11 and 9 fresh covid-19 cases respectively.

In Dakshina Kannada the covid-19 patients include seven women and four men who had recently come from Maharashtra.

One of the patients is a 3-year-old child. Others are girls aged 11 and 17, women aged 36, 37, 45, 59 and men aged 22, 35, 39 and 46.

All of them have been shifted to covid-19 hospital from different institutional quarantine centres. 

In Udupi too all the nine people – six men, a boy, and two women -  had come from Maharashtra a few days ago.