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Mangaluru, Apr 21: An elderly woman from Bantwal taluk in Dakshina Kannada district has been diagnosed with covid-19, a deadly disease caused by coronavirus.

The state health and family welfare department, in its bulletin released on Tuesday morning, confirmed  that 67-year old woman suffering from covid-19.

The woman is said to be a neighbour of the woman from who died last Friday after being infected with coronavirus.

It is suspected that the virus reached elderly woman's body as she was in touch with the deceased.

The woman was admitted to Covid - 19 Hospital, Mangaluru, on the April 18 after she developed breathing problem. It is learnt that she is responding to the treatment

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 15: The Karnataka government on Wednesday opened a critical care support unit to monitor the progress of Coronavirus patients in Intensive Care Units (ICUs) of various designated COVID hospitals across the State.

Karnataka is the first state in the country to establish a dedicated unit for critical care support, by linking ICUs of COVID hospitals onto a single platform, Medical Education Minister Sudhakar K, who inaugurated it, was quoted as saying in a statement on Wednesday.

Its objective is to monitor COVID-19 patients in ICUs across Karnataka state so that the hospitals are prepared for the potential onslaught of the virus and thereby to achieve zero COVID mortality in Karnataka, he said, adding, it would enable capturing details of ICU COVID-19 patients in real-time