Congress is setting fire, BJP is dousing it, claims Rajnath Singh

Davanagere, Apr 26: Amid the national lockdown imposed by the Centre to check the spread of coronavirus, social distancing norms were flouted as BJP MLA from Honnali -- MP Renukacharya -- held a meeting of ASHA workers on Thursday.

The workers were present in large numbers and no distance of at least one metre between the workers was maintained during the meeting.

However, the workers were seen wearing masks at the meeting but violating the norms of social distancing.

Social distancing is one of the measures that can help people avoid contracting the highly contagious coronavirus.

According to the Union Ministry of Health and Family Welfare, Karnataka has a total of 489 positive COVID-19 cases of which, 153 patients have recovered and 18 patients have died due to the deadly virus.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 26: Rubbishing reports about cancellation of institutional quarantine for international passengers in Mangaluru, local health authorities have clarified that 14 day isolation including first seven day institutional quarantine must for international passengers. 

For past couple of days rumours were doing rounds on social media that the government has done away with quarantine for international passengers. A few Mangaluru-based news portals also had published it as news without quoting any reliable sources. 

Meanwhile, district health officer in his clarification message said that neither Karnataka government nor Dakshina Kannada district administrant has revised the quarantine norms for international passengers. 

“Those who arrive from overseas must remain in isolation for 14 days. Out of this, seven days have to be spent in institutional quarantine (in hotel or lodge). During this period, the throat swab sample of the person will be sent for covid-19 testing. If the report is negative, then they will be sent to home quarantine for another seven days."

He said that concession in terms of number of days has only been given for people with other health conditions, children and the elderly. "For children below 10 years, pregnant women, elderly above the age of 60 years and other with other ailments, the throat swab will be collected on the second day of institutional quarantine. If the report turns negative, they will be sent to home quarantine for 14 days."