Muller Health Expo-2012 highlights health and hygiene

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Chamrajnagar, May 30: Karnataka Cabinet Minister Ramesh Jarakiholi said on Friday that over22 Congress MLAs were in touch with him and he can bring five of them.

"More than 22 Congress MLAs are in contact with me and if the high commands wants, I can bring five of them tomorrow," Jarakiholi told reporters.

Replying on speculation that some MLAs in BJP are not happy and want to join the Congress, he said, "Congress is a sinking boat and nobody wants to go to Congress now."

Meanwhile, sources in BJP have said that some party leaders are not happy including Basangouda Ramangouda Patil Yatnal.

Basvanagowda Patil said earlier this week that "BS Yediyurappa is not his CM, he is the CM of Karnataka. My leaders are Narendra Modi and JP Nadda."

The sources also said that other close aides of Yeddyurappa like Umesh Katti and Murugesh Nirani are no longer happy with him as they are yet to be included in the state cabinet.

The sources said Nirani has stood with Yeddyurappa but has not been included in the cabinet. There is speculation that several MLAs are in touch with Nirani.

Sources said Nirani, Umesh Katti, Basvanagowda Patil and several other leaders held a meeting in an undisclosed location.

Congress leader DK Suresh said the Congress has no role in the developments in BJP. "Yeddyurappa government will be brought down by their own MLAs. Congress has no role in it," he said.

Newsroom, May 5: Following the union government's nod, preparations are afoot to bring back Indian nationals stranded abroad from May 7 onwards.

According to sources, in the first phase from May 7- 14, the government would allow more than 60 “non-scheduled, commercial” flights to operate from about 12 countries to India to bring back 15,000 citizens. At least half of those flights will be from the Gulf region, including UAE, Qatar, Saudi Arabia, Bahrain, Kuwait and Oman, while the rest would bring passengers from the U.S., the U.K., Singapore, Malaysia, Philippines and Bangladesh.

The flights would be spread over 10 States identified as having the largest numbers to return, with Kerala, Tamil Nadu and Delhi (NCR) receiving the maximum number of flights.

A meeting held at the Ministry of Civil Aviation looked specifically at flights, mainly operated by Air India, while it awaits a final plan from countries where Indians need to be airlifted from. The first flights planned at present are from Abu Dhabi, Dubai, Riyadh and Doha, flying directly to Kozhikode and Kochi.

While the full estimate of Indians needing to return home could cross ten lakhs (a million), with more than two lakhs having registered to return from the UAE alone, officials said their return would be “prioritised and staggered”.

Flight plan for return of Indian nationals stranded abroad: