Muthalik booked for provocative speech during anti-iftar protest

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, May 5: A 62-year-old woman from Vijayapura succumbed to coronavirus infection on Tuesday, taking the COVID-19 death toll in Karnataka to 28, a health official said.

The state has registered eight more COVID-19 cases in the past 19 hours, increasing the count of such cases to 659, the official added.

"Positive case 640, 62-year-old female resident of Vijayapura died on Tuesday due to cardiac arrest," the health official said.

Admitted to a designated hospital''s ICU on Sunday, the woman was also suffering from Chronic Obstructive Pulmonary Disease (COPD), Bronchial Asthma (BA) and complained of breathlessness.

Among the eight fresh cases that emerged in the state, four were contacts of earlier cases, two with Influenza Like Illness (ILI) and one with travel history to Uttarakhand.

The health department is also tracing the contact history of a 30-year-old woman from Bengaluru Urban.

Incidentally, no new cases emerged from Davangere as 22 cases rocked the district on Monday.

Among the new cases, Bengaluru Urban contributed 3, followed by Bagalkote, 2, Ballari, Dakshina Kannada and Bhatkal in Uttara Kannada, 1 each.

Of the new cases, six are men and two women.

The decision of the Indian government to ease the coronavirus-linked global travel restrictions imposed on those having OCI cards has given a big relief to many stranded overseas citizens of India across the world.

OCI card is issued to people of Indian origin globally which gives them almost all the privileges of an Indian national except for the right to vote, government service and buying agricultural land. The OCI card gives them a visa-free travel to India.

On Friday, the central government allowed certain categories of OCI card holders, who are stranded abroad, to come to the country. Earlier, according to the regulations issued by the Indian government in April, visas of foreign nationals and OCI cards were suspended as part of the new international travel restrictions following the COVID-19 pandemic.

This privilege of visa free travel to India was causing distress among a large number of people of Indian-origin and Indian citizens in countries like the US whose children were OCI card holders as they were born in this country.

Many Indian parents, several of whom lost their jobs as a result of the economic crisis due to coronavirus pandemic, but were not allowed to take the special evacuation flights of Air India from various US cities, took to social media and urged the Indian leaders to allow them to travel to India.

“This is a big relief for the OCI card holders. It was a humanitarian crisis in the making. I am pleased that the Indian Government listened to their voices,” said social activist Prem Bhandari, chairman of Jaipur Foot USA, who has been taking up the cause of the OCI card holders.

Dr Arathi Krishna, former deputy chairperson of NRI Forum of Karnataka government, who had been demanding this relaxation, many of the thousands of stranded OCI card holders in defferent parts of the world were in pursuading her to exert pressure on the authorities concerned for this much needed relaxation.

The restrictions on traveling of OCI card holders to India was issued by govt of India on March 13 in the wake of global outbreak of coronavirus pandemic. 

She said: "Many parents who are Indian nationals could not travel for emergency purpose to India after repatriation flights started due to their minor children being OCI card holders. Many children who were OCI card holders could not travel to India to perform last rites when there was death in their family due to these restrictions"

"I was constantly pressurising and bringing these issues to the attention of ministry officials in External Affairs and Home Affairs departments. I was following up with Mr Dammu Ravi who is heading the COVID task force  task firce in the ministry of overseas Indian affairs who took interest in solving this problem through his consistent efforts with MHA. Iam thankful to Fireign Secretary too for his efforts and concern and to MHA for making it easier now for OCI card holders to travel in repatriation flights with emergency reasons," she said.