Mangaluru youth stranded in Saudi Arabia returns home; family thanks Indian Social Forum

Udupi, Jun 20: The wife and daughter of a 54-year-old man who succumbed to Covid-19, tested positive for the virus on Saturday.

Sources said that the family returned to Udupi on June 18 and the man died the same day while his wife and daughter tested positive today.

The man and his family had arrived at their house in Thekkatte on Thursday, June 18 afternoon. Later in the day, the man died. He was suffering from jaundice and had arrived from Mumbai in the state of illness.

Kalaburagi, Mar 11: A suspected coronavirus patient who had returned to Kalaburagi from Saudi Arabia on February 29 passed away today in hospital.

It is said he was admitted to the hospital on March 5 after he showed flu symptoms. But, the family members of the patient had shifted him to Hyderabad from GIMS on Tuesday against the advice of the doctors.

However, the district administration and District Health Officer (DHO) M A Jabbar are waiting for the final report of throat swab of the patient sent for lab test.

The DHO has directed Taluk Health Officer Sharanabasappa Kyatanal to supervise until the final rites of the suspect person were performed.

Kalaburagi Deputy Commissioner B Sharat said the patient died on Tuesday night on his way back to Kalaburagi after the doctor stated that chances of his survival was bleak. "It is still a suspected coronavirus case. We are waiting for the report," he said.

Sharat said he developed severe respiratory problem coupled with cough, cold and fever. "As he was 76-year-old, he failed to respond to the treatment. It is yet to be confirmed if the cause of death was coronavirus," he 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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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