‘Intelligence report’ on Siddaramaiah’s assembly seat fake, clarifies CMO

Mangaluru, May 19: With lockdown 4.0 coming into force, the Karnataka State Road Transport Corporation (KSRTC) started bus services from Mangaluru to various destinations today.

According to officials, buses started plying from Mangaluru to Bengaluru, Mysuru, Shivamogga, Hubballi and other areas with limited passengers. A bus, which left for Bengaluru from Mangaluru had less than 30 passengers on board.

“Depending on the demand, the buses will be operated with 50% of the capacity. Measures have been taken to ensure that social distancing norms are adhered to while purchasing tickets from the counter,” said S N Arun, KSRTC Divisional Controller.

However, the KSRTC is yet to take a decision on operating Nagarasarige buses in the city. 

“Only those destinations, which can be reached by 7 pm has been considered by the KSRTC while operating the buses. As a result, after 11 am, no buses will travel to Bengaluru from Mangaluru. Further, permission will not be accorded for the travelling of pregnant women, children below 10 years old and senior citizens above 60 years old. Thermal scanning is used for checking the temperature of the passengers before boarding the buses. All the buses are sanitised after each trip,” he said.

Further, he said the contact number, name and address of the passengers are collected by the officials during the travel.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Apr 10: The Karnataka Education Board on Friday further postponed the annual examination for SSLC to May due to extension of lockdown to arrest spread of coronavirus which is spreading like wildfire in the state.

Minister for Primary and Higher Education S Suresh Kumar also announced that the PUC examination were also postponed to May.

"However, depending upon the situation we will announce the date in May and will inform the students one week earlier of the examination date to give time for preparation,"