Prepaid auto-rickshaw counters relaunched; fares revised

Mangaluru, May 27: Karnataka’s twin coastal districts of Dakshina Kannada and Udupi today reported 11 and 9 fresh covid-19 cases respectively.

In Dakshina Kannada the covid-19 patients include seven women and four men who had recently come from Maharashtra.

One of the patients is a 3-year-old child. Others are girls aged 11 and 17, women aged 36, 37, 45, 59 and men aged 22, 35, 39 and 46.

All of them have been shifted to covid-19 hospital from different institutional quarantine centres. 

In Udupi too all the nine people – six men, a boy, and two women -  had come from Maharashtra a few days ago.

Bengaluru, May 24:The first 'Sunday curfew' imposed by the Karnataka government to try and contain the spread of COVID-19 got underway in the state today, with people by and large adhering to norms, roads wearing a deserted look and almost no vehicular traffic, barring essential services.

With barricades being up across most roads in the state, people ventured out only to purchase groceries, vegetabes and medicines.

Instances of violation of Sunday curfew lockdown norms were reported in COVID-19 hotspots of Shivajinagar and Rayapura in Bengaluru and Nelamangala and Devanahalli.

Temples, malls, bars, eateries and small food joints remained shut throughout state.

In most parts of the state buses, autorickshaws and cabs did not ply.

In Bengaluru, the ever bustling Majestic area, which houses the central city bus stand, inter-city bus stand, Metro Railway Station and the City Railway Station, did not see any activity as buses did not ply and all shops were shut, police said.

Reports from Mysuru, Tumakuru, Kolar, Mangaluru, Udupi and other towns across the state said there were no lockdown violations.

Amid the rigid curfew marriages were conducted in a simple manner in various parts of the state like Gollarahatti and Yashwanthapura in Bengaluru and also in Davangere.

Families of the brides and grooms invited only a few people for the event, adhered to social distancing norms and wore masks.

In Gollarahatti, the event organisers cleaned the road, after which the invitees, who were hardly 25 to 30 in number, sat down to have a feast.

The Karnataka government had eased restrictions during Lockdown 4 for start of economic activities like city buses, inter-district bus service, intrastate train services, opening of shops and markets.

However, the government had made it clear that there will be 'Janata Curfew' every Sunday during which only essential services would be permitted.

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