Mangaluru: Fire breaks out at two shops on GHS Road

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 25: Former Karnataka chief minister and Janata Dal (Secular) leader HD Kumaraswamy on Wednesday claimed that there are shortage of beds and ventilators to treat COVID-19 patients in the state.

In a series of tweets, he targetted the Karnataka government on COVID-19 management.

"The state government has failed to provide adequate treatment to those infected with corona. There are no beds and no ventilators to treat more than four thousand patients. Self-induced lockdown is the only solution," he tweeted.

In his subsequent tweet, he said, "Residents of the state, including Bangalore, now have only one way to escape from COVID-19. Stay at home and celebrate yourself as a self-proclaimed lockdown. Money is not more important than life. Your life is in your hands now."

In another tweet, former Chief Minister alleged that the government has fixed Rs 10-15,000 per day for COVID-19 treatment in private hospitals.

"The state government is also saying this indirectly. The 'home remedy' in the home is to stay at home and be safe. The government has fixed Rs 10-15,000 per day for the treatment of this infection in private hospitals. How poor can afford it while upper class can't afford," he tweeted.

"If four members of a family infected with corona, the cost of treatment for a 15-day treatment at a private hospital is Rs 5-6 lakh. Where do the poor bring that Much money? We must save our lives while the government is sitting incapable. This is my concern for the people of the state," he said in another tweet.

In a video message that HD Kumaraswamy demanded the state government to give all kinds of safety and security to the students who are writing the SSLC exam tomorrow.
HD Kumaraswamy also urged students to be careful.

About 8,48,203 students will appear in the Secondary School Leaving Certificate (SSLC) examination tomorrow, said Karnataka Health Minister B Sriramulu on Wednesday.