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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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 20: Amid calls for boycott of Chinese products in the backdrop of Indo-China border face-off, former Karnataka chief minister HD Kumaraswamy sought to know from the BJP government in Karnataka the status of the "Compete with China" policy brought during the previous JDS-Congress rule.

Boycotting Chinese products was not easy like sloganeering but required a creative policy and the coalition government's initiative was a model for it, he said in a series of tweets.

"After the border skirmish, some people got the realisation to boycott the Chinese products but during my tenure (as chief minister) a serious thought was given to it," the JDS leader said.

He was apparently referring to growing clamour for boycott of China-made products after a violent clash between Indian and Chinese troops in the Galwan Valley in Ladakh left 20 Indian Army personnel dead early this week.

Mr Kumaraswamy said he had brought the Compete With China policy to effectively deal with the neighbouring country.

"My government's objective was to offer jobs to the local residents, snatch away market opportunities for China and discard the Chinese products."

"However, what has the present government done to our scheme? It is not known whether it is still continuing or not," Mr Kumaraswamy said.

The Kumarswamy government had identified clusters and earmarked Rs 2,000 crore for their development.

Kasaragod, Mar 31: Two more Kasaragod natives lost their lives on Monday due to blockade of the interstate border by Karnataka police in the wake of outbreak of novel coronavirus.

They could not get emergency health care as the Karnataka police stopped the ambulance carrying them to a hospital in Mangaluru at the border.

Another critically-ill person, who was sent back by Manguluru hospital authorities on March 23 for being a Kasaragod native, also died on Monday.

This is the fifth such case in many days.

The deceased are Madhavan, 50, Ayesha, 55 and Aziz Haji, 61 respectively.

All three of them lived near the Karnataka border.

Madhavan, who hailed from Thummanattu in Manjeswaram, died enroute to Kanhangad hospital after being denied entry to cross over to Karnataka. He had an acute bronchial attack.

Udyavar native Ayesha, an asthma patient, was referred to the Mangaluru Hospital by the hospital authorities at Uppali. When the authorities stopped her at the border, she was taken to the Kanhangad hospital. However, she died before reaching the hospital.

Aziz Haji, from Nayabazar Cherugoli MA Cottage at Uppala, was allegedly refused entry into a Manguluru Hospital on March 23 on account of being a Kasaragod native. Haji was a dialysis patient at the hospital. “We were unable to contact his doctor at the time,” his relatives said. Haji, who was on the ventilator, lost his life Monday morning.

One more from Kerala dies as Karnataka police stop ambulance at border
Kunjathoor native Abdul Hameed and Bandwal native Fathima also lost their lives due to the closing of the interstate border.

The district authorities has appealed to the Government to intervene in the matter and influence Karnataka as to lift a ban in crossing over for ambulances carrying critical patients.

The people of Kasaragod are largely dependent on the medical facilities in Mangaluru for critical illness care.

The Kasaragod MP, Rajmohan Unnithan has said he would move the Supreme court against this.

Kerala Chief Minister Pinarayi Vijayan has already taken up the issue with the Centre.

Kerala HC takes up issue with Karnataka AAG

The Kerala High Court on Monday sought the views of the Advocate General of Karnataka on the issue of the government of the neighbouring state blocking its borders with Kerala.

Considering a Public Interest Litigation (PIL) filed by Kerala High Court Advocates Association, seeking a direction for opening the roads, a bench comprising Justices A K Jayasankaran Nambiar and Shaji P Chali requested the Advocate General of Karnataka to join the hearing at 11 am on Tuesday through video conferencing.

The Court orally observed that the blockades erecting embankments on the inter-state roads would affect the people's right to life.

The Karnataka government blocked the state highway with to prevent movement of vehicles carrying essential goods and people seeking emergency treatment at hospitals in the city of Mangalore bordering Kasaragod.

With 97 infected patients, Kasaragod has the largest number of COVID-19 cases in Kerala. 7,437 people are under observation in the district.