Coronavirus can go up to 8 metres from exhalation, linger in air for hours: MIT scientist

News Network
April 2, 2020

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

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News Network
July 3,2020

New Delhi, Jul 3: Accredited Social Health Activists (ASHAs) in Karnataka have emerged as a "crucial pillar in the state's success" in combating Covid-19, the Union Health Ministry said on Friday.

Acknowledging and praising their work, the ministry said they have been actively participating in household surveys in the state, screening inter-state passengers, migrant workers and others in the community for symptoms of the infection,

“Around 42,000 ASHAs have emerged as a crucial pillar in the state's success” in combating Covid-19, the ministry said.

"Recognizing the increased vulnerability of certain population groups to Covid-19, in a one-time survey to identify households with the elderly, persons with co-morbidities, and immune-compromised individuals, about 1.59 crore households were covered," the ministry said in a statement.

ASHAs regularly monitor such high-risk groups in their area with a periodicity of follow-up visits varying from once a day in the containment zones to once every 15 days in other areas, it said.

They also visit the houses of persons complaining influenza-like-illness (ILI) symptoms and severe acute respiratory infections (SARI), besides high-risk individuals who have called the state health department helpline numbers, the ministry said.

ASHAs are a part of the Rural Task Force, headed by Panchayat Development Officer (PDO) at the Gram Panchayat level, for addressing public grievances on both Covid-19 and non-Covid-19 related services.

ASHAs are trained female community health activists selected from the village itself and accountable to it. They are trained to work as an interface between the community and the public health system.

In the urban areas too, they have been at the forefront of dissemination of various awareness activities in fever clinics and swab collection centres in urban areas.

They have also actively screened cases of ILI and SARI in urban areas. They are also part of the screening teams at international and interstate check-posts.

Karnataka has reported 272 Covid-19 deaths and 18,016 cases, according to the health ministry data updated at 8 AM.

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coastaldigest.com news network
July 21,2020

Udupi, Jul 21: Sri Sugunendra Teertha Swami, the chief pontiff of Puthige Mutt, has tested positive for coronavirus. 

The pontiff got admitted into KMC Hospital Manipal last night and his treatment is in progress at the said hospital.

He was supposed to initiate his annual Chaturmasa Vruta at Padigaru Mutt on Tuesday.

According to sources, he was suffering from fever and hence he opted to get tested for covid-19. His health condition is said to be stable.

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News Network
January 24,2020

Bengaluru, Jan 24: On the last day of his four-day trip to Davos, Switzerland, to attend the World Economic Forum, chief minister BS Yediyurappa urged the global business community to invest in cities other than Bengaluru in the state.

On Thursday, while extending an invitation to entrepreneurs to participate in the Global Investors Meet in November in Bengaluru, Yediyurappa highlighted the “conducive investment climate” in the state vis-a-vis others by pointing to its 7% growth rate which is much higher than the national average of below 5%.

He also pointed to the state’s rich history and the fact that it is home to a number of desi MNCs such as Infosys, Biocon Wipro and Dynamatics. “At the same time, the state has one of the lowest unemployment rates compared to the national average,” Yediyurappa said.

In his address to heads of businesses, industries minister Jagadish Shettar also urged investors to consider Tier 2 and 3 cities for investment. “Land banks have been created in Tier 2 and 3 cities and regional connectivity has improved. Let us strive to place Karnataka on a highgrowth path,” Shettar said.

Lending a “helping hand”, Union minister Piyush Goyal, in his address, appealed to the community to invest in Karnataka, which “has a robust and congenial industrial atmosphere”, but also urged them to spread “tentacles” to all parts of the country.

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