Indians stuck in Saudi Arabia due to lockdown ought to know these things before returning home

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 24: A couple got married in Bengaluru today, even as Karnataka government has announced a complete lockdown on Sundays, as part of the fourth phase of COVID-19 shutdown till the end of this month.

The marriage ceremony on this Sunday was possible thanks to a clarification given by the state government for marriages, which has been already scheduled for May 24 and May 31 to be exempted from the Sunday complete lockdown.

At today's wedding, the rituals were performed with compliance of all guidelines including ensuring social distancing and capping the number of guests at 50.

Satish, the groom said, "Government has allowed weddings with up to 50 people in attendance but we decided to invite only 25 people to the ceremony".

Meanwhile, in the Honnali Honnali area of Davanagere, BJP MLA MP Renukacharya distributed masks to three newly-wed couples.

As per an earlier advisory issued by the State government more than 50 guests, no air conditioning, and the consumption of liquor and paan are among the guidelines to be followed for holding weddings in the state. Also, people aged above 65 and below 10 as well as pregnant women have been barred from participating in the event.

According to the advisory, sanitisers should be provided at the entry and other appropriate places at the venue. Also, thermal screening of all persons shall be conducted at the entry of the venue. The scanner should be held 3-15 cms away from a person's forehead.

Apart from this, the venue shall be "clean and hygienic," and a "nodal person shall be identified for overseeing the arrangements and coordination at the venue." Also, a list of attendees with contact details has to be maintained and all guests should have downloaded Aarogya Setu app.

Abu Dhabi, Feb 17: NMC Health Plc, a hospital operator targeted by short-seller Muddy Waters, said founder Bavaguthu Raghuram Shetty resigned amid investor concern he faced a margin call and misrepresented his stake.

The board asked for Co-Chairman Shetty’s resignation and it takes effect immediately, according to a person with knowledge of the situation. NMC has lost four board members since Friday, including Vice Chairman Khaleefa Butti, whose holdings are also being probed. The stock, the worst performer on the FTSE-100 Index this year, fell as much as 9.2 percent Monday morning and then rebounded.

“The resignation of senior board members should be viewed positively,” said Abdulla Nahlawi, an analyst at Rasmala Investment Bank in Dubai. “The credibility of the current board has been jeopardized with the unfolding of the recent events.”

NMC shares lost almost half their value the first week of February on speculation the company’s main investors faced a margin call, in which banks seize shares pledged as collateral. NMC said Friday that First Abu Dhabi Bank and Al Salam Bank Bahrain obtained 20 million shares in the company from BRS International Holding, an investment vehicle of NMC’s top shareholders. The banks sold more than 8 million of those shares as “enforcement of security,” NMC said.

NMC operates the largest medical network in the United Arab Emirates and in 2012 became the first Abu Dhabi company to list in London. The shares started teetering in mid-December when Muddy Waters alleged that NMC manipulated its balance sheet and inflated the prices of companies it acquired.

Shetty, 77, was born in India and founded NMC in the 1970s after moving to Abu Dhabi. His spokesman said a legal review of the situation is ongoing and declined further comment.

Chief Investment Officer Hani Buttikhi and board member Abdulrahman Basaddiq also stepped down because they were appointees of Shetty and Butti, NMC said, adding that they had no knowledge of the share transfers.

Questions remain over the role of Shetty’s family at the company. His wife and son-in-law both hold roles in senior management.

Almost 10 per cent of NMC’s freely traded shares are shorted, according to Markit Securities data. In mid-December about a third of them were.

Last week GKSD Investment, an investment company backed by hospital investors, said it’s studying a possible offer for NMC. Under U.K. takeover rules, it has until March 9 to make a bid.

NMC has said Muddy Waters’s claims are false and the company hired former FBI Director Louis Freeh to conduct an independent review. The review is due to be completed before the company issues its financial results in March, the person said.

NMC said Mark Tompkins will continue as the company’s sole chairman.