PM Modi blasts cow vigilantes, calls them 'anti-social'

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

The Indian government has advised expats in the UAE and the Gulf against travel till flight curbs to their home country are lifted. This follows the clamour from some quarters for special repatriation flights to India.

A senior Indian External Affairs Ministry (foreign ministry) official said Indian citizens are safe in the countries they reside in. Prime Minister Narendra Modi had spoken to leaders of Gulf countries who assured him of their welfare, the Indian foreign ministry said. Meanwhile, the Minister of State for External Affairs, V Muraleedharan,, according to a Malayalam news report, also ruled out special flights.

Responding to a question from Khaleej Times on blue-collar workers' angst following job losses, Vikas Swarup, Secretary West in the foreign ministry said, "Insofar as repatriation is concerned, as you are aware, government has advised against all travel, and Indians have been told to stay where they are, As and when the (21-day) lockdown is lifted, and normal civil aviation resumes, Indians wishing to come back will be able to do so."

According to the latest data from the Indian foreign affairs ministry, there are 1,400 cases of Covid-19 infections among Indian expats in the Gulf region.

Swarup said infected Indians are being treated and kept in isolation in the UAE and Gulf. "Our missions have established contact with all the community leaders and the situation is under control," he said.

Cargo flights operating as usual  

Cargo flights carrying fruits and vegetables from India to the Gulf have not been disrupted and would continue as usual, the diplomat said. "We are also helping with medicines based on the requests of Gulf countries," he said.

Eight million India expats live in the Gulf, including close to three million in the UAE. They account for more than 60 per cent of remittances to their home country.

India's long lockdown of 21 says ends next Tuesday. Indications are that it could be extended. Some states like Orissa have already stretched it till the end of the month and others are expected to follow suit.

The government believes that the disease is now concentrated in 75 districts, and the focus should be on these areas to manage and contain the virus.

Bengaluru, May 12: About 101 labourers bound for Rajasthan from Bengaluru in a goods truck were detained near a border Checkpost at Hirebagewadi village in Belagavi taluk on the Pune-Bengaluru national highway and have been sent into institutional quarantine on Tuesday.

Police said that the Labourers comprising of men, women and children had been travelling towards Rajasthan in a goods truck without permission from Karnataka and even from their home State Rajasthan.

In the morning hours, police and other department personnel manning the check post near...check post near Hirebagewadi detained them.