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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, Jul 22: City based APD Foundation has mooted the idea of giving state recognition and compensation for ‘Covid Saviors’, namely healthcare workers and civic officials who die in the line of duty in the war against Coronavirus pandemic. This suggestion was formally proposed by Abdullah A. Rehman, Founder & CEO, APD Foundation in a letter addressed to Shri Narendra Modi, Hon’ble Prime Minster of India and Shri B. S. Yediyurappa, Hon’ble Chief Minister of Karnataka on July 22, 2020.

In the letter Mr. Rehman asserts that COVID-19 pandemic has caused widespread devastation in the country and played havoc in the lives of the common man. In this scenario, the healthcare workers, such as doctors, nurses and paramedics along with civic officials have emerged as the saviors of the suffering humanity. They expose themselves to great personal risk while treating Covid patients. Many of them catch infection and a few of them have died. Such persons deserve to be recognized by the government for their supreme sacrifice.

Elaborating the rationale behind the proposal, the letter draws comparisons with practice of soldiers who die on the battlefield being glorified as ‘MARTYRS’. The slain soldiers are decorated posthumously with medals and titles of honour. Their families are provided with generous cash compensation so that the future of their widows, children and parents are safeguarded. They are provided with allotment of land, lucrative business opportunities like petrol pump / gas agency or reservation in government jobs for their spouse and children.

The letter suggests that healthcare workers and civic officials who succumb in the line of duty should also be similarly honoured. “Hence I propose that healthcare workers like doctors, nurses and paramedics who die while treating Covid patients should be recognized as ‘COVID SAVIORS’. Civic officials who are working for the cause should also be included in this scheme. Generous compensation should be paid to their families so that their future welfare is ensured as if they were alive,” Mr. Rehman has written.

The suggestion has been made in the wake of news reports that the Odhisha State Government has announced compensation of Rs. 50 lakhs and state honours for healthcare workers who die on Covid duty. Similarly the French government has announced a major increase in salary to its healthcare workers. In the same manner India too can provide optimum welfare to its health workers and set an example on the world stage.

“Though Covid pandemic is likely to be a temporary phenomenon, there is a need to recognize the service of those who are helping society to overcome this grave crisis. They inspire confidence in the hearts of the common people in the same manner as soldiers in uniform do. Hence I urge you to accept the suggestions made herein and announce the same at the earliest,” Mr. Rehman concludes in his letter.

Copies of the letter have also been sent to Shri Nalin Kumar Kateel, MP, Mangalore, Shri D. Vedavyas Kamath, MLA, Mangalore and Smt. Sindhu B. Rupesh, IAS, Deputy Commissioner, DK District for their information and follow up action.