PFI turned DK into ‘jihadi laboratory’: Shobha writes to Union Home Minister

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mandya, Apr 7: A man who was suspected of having the COVID-19 infection, escaped from the isolation ward of the Mandya Institute of Medical Sciences (MIMS), on Monday, creating panic among the people and hospital staff.

The man had earlier been in quarantine in Malavalli. On Sunday night He was shifted to MIMS Hospital, after he complained of throat infection and breathing problems and was kept in an isolation ward.

On Monday morning, however, the hospital staff found missing from the ward. They immediately reported the matter and launched a search for him. Superintendent of Police K Parashuram and Additional SP V J Shobharani and others rushed to the spot and began an inquiry. They also viewed the CCTV footage.

Bengaluru, Apr 9:  Ministers and members of Legislature in Karnataka will take a 30 per cent cut each in their salaries and allowances to fund the fight against coronavirus in the state, for a year.

An ordinance to reduce the salaries of ministers and legislators by 30 per cent for one year to meet the exigencies arising out of COVID-19 pandemic was approved by the state cabinet headed by chief minister B S Yediyurappa on Thursday.

"... we have cut by 30 per cent salaries and allowances of all ministers, MLAs, MLCs, also speaker, deputy speaker, chief whip every one for one year from April 1, amounting to Rs 15.36 crore," Law and Parliamentary Affairs minister J C Madhuswamy said.

Speaking to reporters after the cabinet meeting, he said, "we have the consent from all the political parties for this, so we have passed the ordinance today."

The Union Cabinet on Monday had approved a 30 per cent cut in salaries of all Members of Parliament and a two-year suspension of the MP Local Area Development (MPLAD) scheme.