SDPI and PFI have terror ties; Congress govt in Karnataka protecting them: Lekhi

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Udupi, Apr 7: The district administrations of Udupi and Uttara Kannada districts have appealed to the state government to request Indian Council of Medical Research (ICMR) to allow COVID-19 tests at Manipal’s Kasturba Hospital.

Kasturba Hospital was granted approval by the ICMR to conduct tests on samples to detect the novel coronavirus on March 24, however it rescinded it later.

Udupi district Deputy Commissioner (DC) G Jagadeesha stated that the Council did not provide any reason for the cancellation of approval; his office has requested the Chief Secretary to pressurise the Council in granting approval again.

Mangaluru, Jul 23: A nurse who was serving as a frontline COVID warrior at the Wenlock Hospital in Mangaluru and has recently tested positive along with her 7-year-old son has complained to the Deputy Commissioner against the harassment meted out by some miscreants who have been spreading false rumours against her.

Health official said that some people in her area have given false complaints against her to government officials thus inflicting mental torture on her and her family.

In her letter, the nurse has stated that the attitude of the people forcing her to consider quitting the job. "I have served the people by treating my work as worship. Anti-social elements have been torturing me now. I am very much hurt," the she said. 

The nurse’s house at Moodbidri has been sealed after she was tested positive. However, her husband and younger child were tested negative.