Was it a fake encounter? Video of killing 8 SIMI activists raises doubts

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Mar 25: In what is suspected to be the second COVID-19 death in Karnataka, a 70-year-old woman from Gouribidanuru, who was under house quarantine for the last one week has died at Rajiv Gandhi Hospital for Chest Diseases.

The woman, who had recently returned from the Mecca pilgrimage developed fever on Tuesday afternoon. She was rushed to hospital, where she died on Wednesday morning.

Health and Family Welfare officials said that the throat swab sample of the woman had been sent to the laboratory for testing and the result was expected to come by afternoon.

Since last week, at least three cases of COVID-19 positive had been reported in Gouribidanuru in Chikkaballpura district, about 80 kms from Bengaluru.

Most of the suspects and confirmed cases had returned from Makkah pilgrimage. Even the deceased woman was one of them and had been advised house quarantine.

On Tuesday morning, she developed fever and was shifted to Gouribidanur hospital and later to Chikkaballapura hospital. By evening, she was moved to Rajiv Gandhi hospital, where she died on Wednesday morning.

The Chikkaballapura district administration has proclaimed prohibitory orders in the locality. They have also taken the woman's family members for testing.

Mangaluru/Bengaluru, Jan 23: A day after two senior functionaries of the BJP — a deputy chief minister and a political secretary to the chief minister — made provocative speeches against a minority community, Nalin Kumar Kateel, state president of the saffron party, on Wednesday issued a gag order, banning functionaries from talking on issues without the party’s approval.

Deputy CM Govind Karjol and Honnalli legislator MP Renukacharya had passed comments castigating Muslims, in the process seriously denting the image of the party which is trying to avoid controversies in its efforts to allay fears on the Citizenship (Amendment) Act. The comments come on the heels of Ballari City legislator Somashekara Reddy warning Muslims at a pro-CAA rally of repercussions if they do not fall in line.

Kateel said a gag order has been “clearly” communicated to all concerned at a recent meeting that he and chief minister BS Yediyurappa had chaired. “Our message to party functionaries is in line with what Prime Minister Narendra Modi has told his council of ministers and party MPs — to focus on their work and constituencies rather than comment on issues. Let them leave this task to official spokespersons of the party,” Kateel said.

However, it appears the message hasn’t gone through to Renukacharya, Yediyurappa’s political secretary. A day after courting controversy by saying anti-nationals were using mosques to store weapons, Renukacharya said he stood by his comments and launched a fresh tirade against madrasas, saying they were manipulating youth and encouraging terrorism.

Speaking to reporters on Wednesday, Renukacharya said: “In our [temple-run] institutions, nothing anti-national is taught. We only teach values that are mandated for life. But at madrasas, youth are manipulated by teaching terrorism. Why do we need such schools? The majority of those accused of terrorism are Muslims.”

He immediately followed up this comment by saying he did not imply all Muslims were terrorists. The Honnalli MLA justified his comments saying he did not receive a single Muslim vote in the 2018 assembly elections. “They [Muslims] come to us seeking our help. They want the BJP for development, but when it comes to elections, they vote for Congress and JD(S),” Renukacharya said. He said no “special packages” will be distributed to Muslims in his constituency.