Udupi: Speeding bus rams into scooter, kills award winning teacher

Mangaluru, Apr 25: The coastal district of Dakshina Kannada today reported another covid-19 case. With this the total number of coronavirus positive case in the district rose to 18 including two deaths. 

The health and family welfare department in its bulletin today announced that a 33-year-old woman from Bantwal tested positive for coronavirus. She is undergoing treatment at Wenlock Hospital which is now converted into covid-19 hospital. 

She is the daughter of 67-year-old woman from Bantwal who was tested positive for the deadly disease last week. Both are the neighbours of the two women from Bantwal who died of covid-19 recently.

A 7-year-old Dalit girl who had gone missing from outside her residence in Tamil Nadu’s Pudukkottai district on June 30 was found dead last evening. 

Police sources said that the body with severe injures was found in a forest area bordering her village. The young girl had been sexually assaulted before the murder, according to police.

Victim’s neighbour, Raja, 25, who belongs to the Pandaram caste, has been arrested in connection with the incident.

While they have included murder charges in the First Information Report (FIR) against him, they are awaiting the post-mortem report to add sections of the Protection of Children against Sexual Offence Act (POCSO act) in the FIR.

"The girl was playing outside her home at 4pm. Her parents then found her missing and her father filed a complaint at the station at around 7pm. Efforts were then underway to find the girl," said an investigating official.

They found the minor's body in the forest area near her village on the evening of July 1. Her clothes were in a state of disarray and her face was severely injured.

"She has been beaten with sticks on the face and injuries are clearly visible. The post-mortem will reveal the actual cause of death," says an official from the district.

Police sources further add that the neighbour had found the minor roaming around the area on Wednesday and allegedly took advantage of the fact that she was alone.

"During inquiry he admitted that he had sexually assaulted and murdered the girl," says a police official from the district. "Further investigation is underway and we will have more clarity once we get the post mortem report," he adds.

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