10 more venues cleaned under Swacch Mangaluru drive

Bengaluru, Jul 5: Archbishop Emeritus of Bangalore Bernard Moras has been diagnosed with mild symptoms of Covid-19 and his condition now is said to be stable.

"Most Reverend Bernard Moras, Archbishop Emeritus of Bangalore, had gone to St. John's Medical College for a routine check-up on July 2 as he was not well. Yesterday (July 3), it was confirmed that he has mild symptoms of Covid-19 and the doctors have stated that his condition at present is stable," Archbishop of Bangalore Peter Machado said in a message.

"We assure our beloved Archbishop Emeritus of the prayers of all the faithful in the Archdiocese and wish him a speedy recovery, he said.

The Archbishop Emeritus is aged about 78. 

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Apr 25: Former Karnataka Health minister and senior Congress leader Dr H C Mahadevappa on Saturday urged the state government to chalk out a comprehensive plan to conduct tests among the vulnerable sections in the society to impede the spread of the dreaded COVID-19 pandemic in the state.

Speaking to media persons, Dr Mahadevappa, felt that only restricting people to remain indoors will not suffice to tackle the spread of the contagious disease he said that "There needs to step up testing the people especially belonging to the vulnerable sections of the society".

Maintaining that the COVID-19 disease, which has progressed itself as a pandemic, across the globe, former Health Minister said that "there is also a need to fight the menace with multiple dimension, as it has potential to cause damage not only the social life of the people but also their livelihood".