Hindutva and nationalism cannot be one and same: Prakash Raj

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 17: Karnataka Health Minister and BJP leader B Sriramulu on Friday claimed that Congress supports Social Democratic Party of India (SDPI) and Popular Front of India (PFI) to disturb peace in the state.

His statement came after the arrest of 6 SDPI supporters in connection with an attack on a BJP-RSS follower during a pro-CAA rally held in December last year.

"The Congress party 100 per cent supports SDPI and PFI. Whenever they do not get the power, they try to disturb the peace with the support of SDPI and PFI. I will propose in Karnataka Assembly session to ban these organisations in Karnataka. We will discuss this matter," Sriramulu told ANI.

"We had already demanded for the ban on these organisations in Karnataka when I was an MP. Shobha Karandlaje, Yediyurappa and I had met Rajnath Singh, the then Home Minister in Delhi and we had given a memorandum to ban SDPI and PFI," he added.

A case has been registered against arrested SDPI supporters under relevant Sections of the Indian Penal Code (IPC). Bengaluru Police is constituting a new Special Investigation Team (SIT) to handle this case.

"There were 6 people belonging to SDPI, who were here to carry out attacks on leaders supporting CAA. These people were being paid Rs 10,000 from their handlers to create ruckus here. Now this will be handled by the Anti-Terror unit," said Bhaskar Rao, Bengaluru Commissioner of Police.

Earlier today, Karnataka Minister Jagadish Shettar called for a ban on SDPI.

"SDPI always denies their involvement but it has been proved now. I welcome the police's action. Their organisation should be banned as they have always been involved in anti-social activities and government of India should take very serious note of this," Shettar told ANI here.