A few may quit Cong; 7 JDS legislators ready to join; some BJP MLAs also willing: Param

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 18: Karnataka chief minister B S Yediyurappa today announced lockdown relaxations from tomorrow (May 19) across the state. As per new guidelines public transport services will start operations outside COVID-19 containment zones in the state. 

 “To facilitate easy movements of citizens, services of the BMTC, KSRTC, NEKRTC and NWKRTC will start from Tuesday morning, except in containment zones. Even private buses can ply,” Yediyurappa said, after discussing the Centre's Lockdown 4.0 guidelines with his Cabinet colleagues and officials. 

“The only condition is that only 30 people should travel in one bus so as to ensure social distancing,” the CM said. 

He also clarified that bus fares will not be hiked. “I know there will be losses incurred. The government will bear the losses,” he said. 

Auto rickshaws, taxis and maxi cabs (six-passenger vehicles) will also be allowed to operate. “Auto rickshaws and taxis will have a driver and two passengers. Maxi cabs will have a driver and three passengers,” Yediyurappa said. 

All parks in the state will be open 7 am to 9 am and 5 pm to 7 pm. 

Starting Tuesday, all shops except malls and theatres can open. “This includes salons,” the CM said. 

All relaxation will cease to exist every Sunday, the CM said. “Every Sunday will be a complete lockdown. There’ll be no shops and the movement of people. It’ll be a complete rest day,” he said. 

The existing curfew from 7 pm to 7 am will continue on all days, which means public transport services will not be allowed during this time. 

Trains will run within the state, but interstate trains will not be allowed till May 31, the CM said. 

It is mandatory for citizens to wear masks in public. “Not wearing a mask will be penalised,” Yediyurappa said. 

On the classification of zones, Yediyurappa said the government's main focus was containment zones. “We're particular about containment zones. In the Karwar district, for example, Bhatkal will be a containment zone and no other taluk will have restrictions,” he said. 

However, the government will review the relaxation based on how things pan out. “States have been given the freedom, so we can withdraw or modify as necessary,” he said.

Wuhan, Jan 31: The World Health Organization declared a global emergency over the new coronavirus, as China reported Friday the death toll had climbed to 213 with nearly 10,000 infections.

The UN health agency based in Geneva had initially downplayed the threat posed by the disease, but revised its risk assessment after crisis talks.

suspended or reduced service to China include British Airways, German flag carrier Lufthansa, American Airlines, KLM and United.

Chinese efforts to halt the virus have included the suspension of classes nationwide and an extension of the Lunar New Year holiday.

All football matches across the country also will be postponed, the Chinese Football Association said on Thursday, including games in the top-tier Chinese Super League.

World stock markets tumbled again Thursday on fears that trouble in the "world's factory" would upset global supply chains and dent profits.

Toyota, IKEA, Starbucks, Tesla, McDonald's and tech giant Foxconn were among the corporate giants temporarily freezing production or closing large numbers of outlets in China.

Volkswagen announced Thursday its China joint-venture plants would not start production again before February 9.

US Federal Reserve Chairman Jerome Powell said the coronavirus posed a fresh risk to the world economy.

Throughout China, signs of paranoia multiplied, with residents of some Beijing residential compounds erecting makeshift barriers to their premises.

In one of many similar photos posted online, a man wearing a surgical mask and brandishing a traditional martial arts weapon squatted on a barricade outside a Chinese village, near a sign saying: "Outsiders forbidden from entering".

The crisis has caused food prices to spike, and the central government on Thursday blamed this partly on overzealous preventive measures, issuing a directive banning any roadblocks or other hindrances to food shipments.