Dalit research scholar, suspended after ABVP’s complaint, kills self

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 11: Did Congress party’s Man Friday, DK Shivakumar, not rise up to the occasion and save the situation for the party, whose rebel MLAs were flown into Bengaluru to unsettle the Kamal Nath-led government in Madhya Pradesh? Shivakumar told The New Indian Express on Tuesday, “So far, I have not got any clear direction on what has to be done. But I am in touch with the central leaders. The party does not want to antagonise them... They are our own MLAs.”

He said that the Tenth Schedule, which makes defections illegal, is very strong. “It is not so easy for them once they are expelled. There are courts and then they have to get re-elected. It is not easy to get minister’s post after getting re-elected,” he added.

When pointed out that rebels from the Congress and JD(S) who joined the BJP have got re-elected and become ministers, he said, “There are other issues here.”

Asked about Digvijay Singh, who is at the centre of the controversy in MP and who was AICC general secretary in-charge of Karnataka, not being able to prevent the rebellion in his home state, Shivakumar said, “I do not want to comment on any of our national leaders.”But he was confident that the Congress government would be saved in MP. “I am aware of the developments and keeping track of them,” he said.

Congress leaders seemed wiser after the event.

One of them, who wished not to be identified, said the party clearly did not see the writing on the wall. “Jyotiraditya Scindia supported the BJP at the Centre when it scrapped Article 370. Later too he was not in line with the Congress position on several issues. But during the recent Delhi violence, he criticised the BJP, sending confusing signals,” he added.

The government of India has added 141 more flights to West Asian countries for the second phase of Vande Bharat Mission, its massive repatriation programme for citizens stranded overseas because of Covid-19-related travel restrictions.

The second phase was to end on May 22. However, External Affairs Ministry Spokesperson Anurag Srivastava said the ongoing phase will last till June 13 and that India is looking at making Frankfurt a hub for the mission.

With these new flights, more than half of them to the United Arab Emirates, the total number of flights in the second phase of the programme have gone up to more than 400, people familiar with developments said on condition of anonymity.

The flights were added due to increased demand from citizens stranded in West Asian countries and the availability of adequate quarantine facilities in states for the returning Indians, the people said. As with all the flights operated so far under Vande Bharat Mission, priority will be given in the second phase to Indian nationals with compelling reasons for returning to the country, they added.

The additional flights are from the UAE (81 flights), Oman and Saudi Arabia (15 flights each), Kuwait (14 flights), Qatar (11 flights) and Bahrain (five flights).

A majority of the flights are bound for Kerala (84 flights), while the other destinations are Delhi (10 flights), Tamil Nadu (nine flights), Telangana (six flights) Gujarat and Jammu and Kashmir (five flights each), Bihar, Rajasthan and Uttar Pradesh (four flights each), Punjab (three flights), Odisha and West Bengal (two flights each), Chandigarh, Karnataka and Goa (one flight each).

The other 260-odd flights being operated during the second phase of Vande Bharat Mission are from Armenia, Australia, Bangladesh, Belarus, Belgium, Canada, Egypt, Finland, France, Georgia, Germany, Indonesia, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kyrgyzstan, Malaysia, Mauritius, Myanmar, Nepal, the Netherlands, New Zealand, Nigeria, Oman, the Philippines, Russia, Singapore, South Korea, Spain, Sri Lanka, Sweden, Tajikistan, the UK, Ukraine and the US.

The second phase of the repatriation programme began on May 16 and will continue till June 13, with all the flights being operated by state-run Air India and its subsidiary Air India Express. Private airlines are likely to be included in the third phase.

As of Thursday, a total of 23,475 Indians have been repatriated under Vande Bharat Mission. The second phase had included new destinations such as Istanbul, Ho Chi Minh City and Lagos, and had increased flights to the US and Europe.

More than 259,000 Indians in 98 countries across the world have registered to return under Vande Bharat Mission. Most of them are workers (28%), students (25%), professionals (14.5%), and short-term visa holders such as tourists (7.6%). Fishermen, deportees and Indian nationals who benefited from visa amnesties have also registered.