2 days after returning from Dubai on vacation, Udupi youth killed in accident

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 12: A huge crowd gathered for the grand opening of the newly built 175-metre-long two-lane bridge across Phalguni River on National Highway 169 near Gurupura on the outskirts of the city today.

Even as the photos of the bridge inauguration ceremony went viral on social media, netizens took the elected representatives and the district administration to task for flouting safety norms at a time when the coronavirus cases are continuing to mount in coastal Karnataka.

The bridge was completed in a record time of 15 months. Dakshina Kannada MP and State BJP President Nalin Kumar Kateel and district in-charge Minister Kota Srinivas Poojari inaugurated the bridge in the presence of Mangaluru City North MLA Y. Bharath Shetty and others.

The bridge has come as a breather to thousands of travellers between Mangaluru-Moodbidri-Karkala on the busy NH. The age-old steel bridge had become dilapidated and was a cause for concern for road users. The highway is also under the process of getting widened to four lanes.

The bridge was constructed at an estimated cost of Rs 30 crore by contractor Sudhakar Shetty of Mugrodi Construction. Work started in February last and the contractor had time till February next.

While the two-lane carriageway is 16 metres wide, the bridge has 2.5-metre-wide pedestrian paths on both the sides. New approach roads of 500 metres each were also part of the project.

New Delhi, Mar 21: Karnataka Health and Family Welfare Minister B. Sriramulu on Saturday informed that one more person was tested positive for the coronavirus in the state.

He said that a total of 16 persons have been tested positive for COVID-19 in the state so far.

The victim had come from Mecca and was kept in quarantine facility by the state authorities.

"For a 32-year-old man, who had just returned from a trip to Mecca has found COVID-19 positive. The infection has been confirmed. He has already been treated at an isolated ward of the hospital. Citizens must not have any sort of anxiety," tweeted Sriramulu.

Also, the news and public relations department, the Indian Red Cross Society and the Karnataka State Labour Studies Institute have invited volunteers for the programme to provide real-time information to people to avoid spreading rumours and misinformation about coronavirus.

At least four volunteers will work in four shifts per day in each taluk of the state. There are about 120 volunteers in Bengaluru city and about 3,000 Corona Warriors are expected to register from across the state. Over 400 volunteers have registered via online application on the first day.