Mangalore under CCTV surveillance

Mangaluru, May 15: In a shocking development, five residents of Udupi district, who recently came from United Arab Emirates today tested positive for covid-19.

As many as 49 passengers among over 175 repatriates who were brought from Dubai to Mangaluru International Airport on May 12 were from Udupi district.

Hence they were quarantined in Udupi district and their throat swabs were sent for testing on the same day. Today, five of them obtained positive report. They were today shifted to TMA Pai covid-hospital from their hotel rooms.

Bengaluru, Apr 8: A 65-year-old man from Kalaburagi district became the fifth COVID-19 fatality in Karnataka, where six new positive cases were confirmed, pushing the tally in the state to 181, the health department said on Wednesday.

The man with Severe Acute Respiratory Infection (SARI), died at a designated hospital in Kalaburagi on Tuesday, a day after being shifted from a private hospital where he was initially treated for two days.

"On April 4, he had got admitted to a private hospital, on April 6 he was shifted to ESI hospital, where he passed away," Primary and Secondary Education Minister Suresh Kumar told reporters here.

The private hospital had been locked and its entire medical team quarantined, he said, adding a notice had been served on it for act of "criminal negligence" (by not referring the patient to designated hospital) and will be followed with a police case.

"He was suffering from SARI, on collecting his sample, tests have revealed that he was positive....investigation is on to find how he got infected," the Minister said.

Noting that the hospital in this case did not refer the patient to the designated hospital and kept treating him for two days, he appealed to all private healthcare facilities to inform authorities if anyone showed any indications for COVID-19.

"As of 5 PM on April 8, cumulatively 181 COVID-19 positive cases have been confirmed in the state, it includes 5 deaths and 28 discharges," the health department said in a bulletin.

Out of the positive cases, 71 are those who had come back from foreign countries, while remaining 110 are contacts and those who had gone to Delhi, the Minister said.

Kumar also said an expert committee comprising Narayana Health founder-chairman Dr Devi Prasad Shetty and Jayadeva Institute of Cardiovascular Sciences director Dr C N Manjunath among others, constitutedto devise an exit strategy for the lockdown, has submitted its reports with various recommendations to Chief Minister B S Yediyurappa.

The chief minister and officials were examining it which was likely to come up before the cabinet meeting on Thursday after which the details will be shared, he added.

The health department said the six fresh cases reported on Wednesday included the elderly man from Kalaburagi who died.

Among the positive cases are a woman from Uttara Kannada with history of SARI and contact of a Dubai returnee, a 72- year-old woman from Kalaburagi, who is mother of a patient that tested positive for the disease; a man from Mandya with contact to two patients.

Others include a man from Chikkaballapura with travel history to Delhi and a woman from Bengaluru also with a travel history to the national capital.

Contact tracing is in progress for all the cases, the bulletin added.

The department said out of 148 active cases in the state, 146 COVID-19 positive patients (including 1 pregnant woman) are in isolation at designated hospitals are stable and two in ICU (one each on oxygen and ventilators).

It said out of total 181 cases in the state, six are transit passengers of Kerala.

Bengaluru accounted for the highest in the state with 63 cases, followed by Mysuru (35), Dakshina Kannada (12) Bidar (ten), Uttara Kannada and Kalaburagi (9 each), Chikkaballapur (8) Belagavi (7), Ballari (6), Bagalkote (5), Mandya (4) Davangere, Bengaluru Rural and Udupi (three each), and Kodagu, Tumakuru, Gadag and Dharwad one each.

Those discharged include 16 from Bengaluru, four from Dakshina Kannada, two each from Uttara Kannada, Kalaburagi and Davangere, and one from Bengaluru Rural; while among those dead are two from Kalaburgari and one each are reported from Bengaluru, Bagalkote and Tumakuru.

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