Has Congress adopted the Muslims, asks Deve Gowda

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jul 10: Accredited Social Health Activist (ASHA) workers under the All India Trade Union Congress (AITUC) on Friday held protests in different parts of Karnataka, demanding personal protective equipment (PPE) kits and a salary of at least Rs 12,000 per month.

According to Madhu Kumari, an ASHA worker from Kalaburgi, ASHA workers currently receive a salary of Rs 3,000 per month.

"Our demand is to increase our wages to at least Rs 12,000 per month. We have been making this demand for the last six months but we have not received any response from the authorities. We will not go back to work until we are given an appropriate response. We did not want to create a difficult situation but the government has given us no choice," Kumari told ANI.

Clad in their signature pink saris, the women were holding posters in their hands and raising slogans to demand appropriate salary for their work and the necessary equipment to protect themselves from the ongoing COVID-19 pandemic.

Farhana, an ASHA worker protesting in Shivamogga, said that the women have been making demands for PPE kits since June 30. "We have been taking care of COVID patients for the last few weeks but have not received adequate PPE kits. A few of us received some in the beginning but they were not enough. We are not even given hand sanitiser or masks to protect ourselves," she added.

"We have sent letters to the District Commissioner's Office and to the Ministry of Health and Family Welfare but our pleas have gone unheard. We are protesting to get the attention of the concerned authorities," she added.

They also demanded that authorities to conduct their COVID-19 tests as they have to deal with patients infected with the virus.

Sajida, an ASHA worker in Kalaburagi said, "We are very stressed about the COVID situation. We take care of sick people day in and day out, but no one is there to take care of us. We want the government to conduct COVID tests for all ASHA workers in the state."

Bengaluru, May 12: Karnataka sees the highest single day spike since the start of the pandemic in the state, higher than Sunday's spike in cases. 63 new cases have been reported in last 24 hours. 

With this, the total number of COVID-19 cases rises to 925, said the state health department's bulletin on Tuesday.

While 42 new positive cases reported from May 11, 5 pm to May 12, noon, another 21 fresh 21 cases reported by 5 pm on May 12.

To date, 921 COVID-19 positive cases have been confirmed. This includes 31 deaths and 426 discharged," the bulletin read further.

Morning Bulletin

New cases in Bengaluru Urban 3,  Yadgir 2, Bagalkote 15, Dakshina Kannada 2, Dharwad 9, Bidar 2, Hassan 5, Ballari, Mandya, Chikkaballapura, Kalaburagi (one each).  

Evening Bulletin

Cases in Gadag (3), Kolar (5), Bengaluru Urban (1) and Davangere (11) cases. 

Cases reported on 12 May: 63

Total cases in state: 925