Shanthi Prakashana’s Kannada stall a huge hit at Sharjah International Book Fair

Mysuru, Mar 24:m who returned from foreign travel and flouted home quarantine guidelines has been arrested in Mysuru on Monday. 

The man, who returned from Australia, had a seal on his hand but was roaming around the city. 

According to police, he was supposed to be under home quarantine till April 6. V V Puram Police took him into custody.

Thiruvananthapuram, Apr 24: Kerala Chief Minister Pinarayi Vijayan on Thursday said that there is no community spread or the expected phase three spread of coronavirus in the state so far but the threat continues.

Speaking to media persons here on Thursday, Vijayan said that Kasargod, Kannur, Kozhikode, and Malappuram districts will be in the red zone with full restrictions.

"All the other ten districts in the State will be in the orange zone. With the detection of new cases today, the status of Kottayam and Idukki districts have been changed from green to orange. The district administration will decide on the hotspot areas to be closed," he said.

He said there would be an increase in the number of random tests in the red zones.

"In an effort to confirm that there is no community spread in the State, random antibody tests would be conducted among health workers, police personnel, home delivery persons, volunteers and migrant labourers," he added.

The Chief Minister said that COVID-19 labs set up at the Pariyaram Government Medical College at Kannur and the Kottayam Medical College have got the approval from the ICMR for coronavirus testing. The lab at Kannur Medical College will start functioning from Friday.

The UV sterilised lab, spread over 2,200 sq ft is equipped with four real-time PCR machines. In the first phase, this lab will be able to do 15 tests per day, which will be gradually increased to conduct 60 tests in the next phase.

"With the opening of these two new labs, tests to detect COVID-19 will be conducted in 14 government labs in Kerala. Apart from this, there are two private labs also in Kerala which are doing these tests. Since the number of coronavirus cases is again increasing in the State, the government has decided to procure ten real-time PCR machines to ramp up testing," he added.

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