3-month-old baby choked to death while being fed Cerelac

Bengaluru, Feb 14: A 31 -year-old Bhojpuri dancer and another girl were rescued from human traffickers after the former alerted city police on landing at Kempegowda International Airport (KIA) on Tuesday. They were to be received by a woman named Preethi at the airport.

The dancer had been told she was supposed to perform a few stage shows in the city, which has a significant Bhojpuri-speaking population. But when she realised she is likely to be pushed into flesh trade, she raised an alarm.

The woman, Radha (name changed), is a mother of four children and the lone breadwinner of the family. A few months ago, Radha came in contact with a woman named Soniya in New Delhi during a dance performance. Last month, Soniya got in touch with Radha and offered to pay Rs 40,000 per month if she performed in Bengaluru.

Radha agreed and was sent to Bengaluru from Chandigarh along with the other girl. During the journey, she learnt she was supposed to do more than just perform on stage. A shocked Radha informed the Central Industrial Security Force personnel manning KIA that she feared being pushed into prostitution. KIA police were informed and the women were rescued. Preethi was arrested.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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