Mangaluru: Man held with 26 passports is travel agent; all documents genuine

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Mangaluru, May 4: As the coronavirus lockdown norms have been relaxed in the coastal district of Dakshina Kannada, people will be able venture out for essential activities from 7 a.m to 7 p.m.

The lockdown was imposed in the coastal district on March 22 midnight to prevent the spread of Covid-19. Initially it did not apply to essential services such as sale of food, groceries, milk, vegetables, fruits, and meat and fish. Gradually the administration had to intensify the lockdown and allow those shops to remain open between 7 a.m. and 12 noon. However, today (May 4) onwards there will be relaxation of lockdown between 7 am to 7 pm. 

Precautionary measures like maintaining social distancing has been urged and use of face masks has been made mandatory.

Permitted activities

• Permission for plying of auto-rickshaws, cabs, private vehicles and bikes has been given. However only three occupants, including the driver will be allowed and no pillion rule is applicable for two-wheelers.

• OPDs, medical clinics are permitted to operate.

• Standalone shops, shops located in neighbourhood colony, residential complex will be allowed to operate.

• Private organisations can function with 33% staff capacity while allowing work from home for rest of staff.

• E-commerce activities only for essential goods permitted.

• In site construction activities in urban areas, rural areas including MNREGA works.

• Permission is only available to open the shop in the market and in the market complex.

Prohibited activities:

• Movement of individuals is not permitted for all non-essential activities.

• Travel by air, rail and inter-State movement by road.

• Functioning of schools, colleges, and other educational and training/ coaching institutions.

• Hospitality services, including hotels and restaurants.

• Cinema halls, malls, gymnasiums, sports complexes, bars, clubs, swimming pool, entertainment parks, assembly halls, etc; barber shops, spas and salons, textile and apparel(clothes) shops.

• Social, political, cultural, academic, entertainment, religious and other kinds of gatherings; and, religious places/ places of worship for public. 

• Shops in urban and rural areas, for non-essential goods not allowed in malls, markets and Market Complexes.

• All types of traffic movements will be prohibited after evening (7 pm to 7 am)

Bengaluru, May 10: Karnataka on Sunday reported 59 new cases of coronavirus, taking the total number of cases in the state to 848, informed state health department.
Out of the total number of cases, 422 people have been discharged and 31 have died due to the infection in the state.
The health department further informed that six COVID-19 patients are currently in the Intensive Care Unit.