Six feet distancing not enough to stop coronavirus transmission in light winds: Study

News Network
May 20, 2020

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

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Agecnies
July 13,2020

Moscow, Jul 13: Russia has become the first nation to complete clinical trials of a COVID-19 vaccine on humans. Chief researcher Elena Smolyarchuk, who heads the Center for Clinical Research on Medications at Sechenov University, told Russian news agency TASS on Sunday that the human trials for the vaccine have been completed at the university and the volunteers will be discharged soon.

"The research has been completed and it proved that the vaccine is safe. The volunteers will be discharged on July 15 and July 20," Smolyarchuk was quoted as saying in the report.

Though the results have been favourable with respect to the medication’s effectiveness, no further information was provided on when this vaccine would enter commercial production stage.

Russia had allowed clinical trials of two forms of a potential COVID-19 vaccine developed by the Gamaleya National Research Center for Epidemiology and Microbiology on June 18.

The first vaccine, in the form of a solution for intramuscular administration, was carried out at the Burdenko Military Hospital.

Another vaccine, in the form of a powder for the preparation of a solution for intramuscular administration, was carried out at Sechenov First Moscow State Medical University.

The first stage of research on the vaccine at Sechenov University involved a group of 18 volunteers and the second group involved 20 volunteers.

After vaccination, all volunteers were expected to remain in isolation in a hospital for 28 days.

Earlier, results of the COVID-19 vaccine tests performed on a group of volunteers in Russia showed that they were developing immunity to the coronavirus.

"The data obtained by the Gamalei National Research Center for Epidemiology and Microbiology, proves that volunteers of the first and second groups are forming an immune response after injections of the vaccine against the coronavirus," according to an earlier statement from the Russian Defense Ministry.

Russia has reported 719,449 cases and 11,188 deaths to date.

There are at least 21 vaccines currently under key trials, according to the World Health Organisation (WHO).

The overall number of global COVID-19 cases crossed 12.9 million, while the deaths have increased to more than 5,69,000, according to Johns Hopkins University in the US.

As of Monday morning, the total number of cases stood at 1,29,10,357, while the fatalities rose to 5,69,128.

The US accounted for the world's highest number of infections at over 33 lakh. Brazil came in the second place with over 18 lakh infections. India is third worst affected with over 8.7 lakh people reported to have COVID-19.

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coastaldigest.com news network
April 17,2020

The unexpected lockdown to prevent spread of covid–19 has caused a serious damage to the lives of Indian expatriates irrespective of laborers and entrepreneurs in Kingdom of Saudi Arabia. Different stories of expatriates' ordeals are emerging from the region. 

Abdul Razaq, hailing from Udupi in Karnataka has been running small scale business at Jeddah, Saudi Arabia, based on oil refinery projects of the government. He was undergoing medical treatment for his cancer which is in fist stage. He explaines his ordeals caused by lockdown and stopping the flight facility. 

“I was regularly visiting home country for the treatment of cancer. Now I cannot go as international flight service has been stopped. I expect that government will hear problems of expatriates and will arrange facilities to take us back to home”, he said.

Mubeen from Bengaluru was working on temporary basis  for a company in Jubail. He had lost his jobs like some of his colleagues due to the lockdown.

“As everything was alright, I had brought my parents recently to Saudi Arabia on a visit visa. Things changed drastically with covid-19 attack. Continuous lockdown caused burden over the company and they removed temporary employees like me to control possible losses” he said.

“Now owner of the flat has been harassing me for the rent. I do not have money either to pay rent or to cover daily family expenses. I do not know what to do further”, he added. 

Iqbal from Mangaluru left for Saudi Arabia to help his family. He got a job in a juce centre in Dammam recently. Corona lockdown made his life difficult. He is eager to return his home country. 

“I came to Saudi Arbia because of financial difficulties as I had not found any job with good salary there. I thought I can earn well by going to Saudi Arabia. However, here too the salary was not so good. Now juice center is closed due to lockdown and sponsor is giving very small amount of money as salary through which we cannot afford our expenses and our families back in home,” he said.

“Here It is not easy get help of fellow Indians since most of them have their own ordeals. I would like to return home country; there however we can manage to get help of friends and relatives. I am looking forward the help of Indian government to start air facility for stranded NRIs,” he said. 

Mohsin from Mysuru is a taxi driver in Dammam, Saudi Arabia. He was earning on commission basis. Now Saudi government banned movement of taxis in the region, which pushed him and his fellow taxi drivers into trouble.

“We were earning commissions daily on the basis of trips. Now we cannot move outside with taxi since it may cause us to pay the fine of SR.10000. How can I manage my expenses and family members in home?”, he asked.

There are cases of pregnant women who have to return India for delivery. Those who brought family here on visit visa will not have insurance. Delivery charges and any kind of medical facilities without insurance in Saudi Arabia is very expensive. Expatriate Indians with such problems are awaiting government's help.

“I had brought my wife on one year visit visa. Now she is pregnant and I have to send her back to home for delivery. If lockdown continues, it is difficult to send back and we have to spend big amounts for delivery without insurance. It is a big burden to me as I work for small salary in a company”, said Yunus from Hyderabad, who is living in Jeddah, Saudi Arabia.

Lockdown is haunting even entrepreneurs in Saudi Arabia. Most of expatriates in the industrial hub of Jubail are doing business based on Saudi Government’s oil refinery projects. Saudi Arabia temporarily stopped most of the projects as part of public health safety measures to maintain social distance. 

“We are doing business based on oil refinery projects. Now projects are stopped. We brought around 1100 people on work permit visa on temporary basis. And also, we have around 1200 permanent workers. It is a big burden to provide them with food, accommodation and salary. It may cause a big loss for our company”, said owner of expatriates company, Sheikh Mohammed.

Saudi Arabia had reported first corona virus affected case in March 2, 2020. At the end of March, it was 1600 and now it already corssed 6000. Saudi Health ministry has cautioned the number of affected people may rise 10000 to 200,000 and directed for more precautionary measures. In such case, the Indian expatriates may have to face crisis in the region. 

Indian expatriate organizations are demanding for immediate intervention of Indian government to ensure better quarantine facility and treatment of NRIs in Saudi Arabia as the cases are increasing rapidly. The condition of laborers in some of the camps are such that seven to eight people should share a single bed room. 

“Normally if there is a flat, it will consist three to four bed rooms. In single bedroom companies will provide three four bunk beds and six to eight people should share the room. In such cases, if a person affected with virus it will spread quickly to others. Thus, Indian government should ensure quarantine facility for NRIs”, says Wasim Rabbani, president of Indian Social Forum, Eastern Region, Saudi Arabia. 

President of Karnataka Non Residential Indians, A forum for the NRI organizations of Karnataka, Zakaria Muzain says Indian Government should immediately interfere to bring back those stranded NRIs who wish to return home. Government should intervene to pressure Indian embassy to take the issues of troubled expatriates. 

“Government should make special flight arrangement for such NRIs in trouble. It should also arrange quarantine facility for those who return to India. Already there are many Non-Governmental charity organization which have come forward to give their facilities for NRIs”, he said. 

NRIs from all categories are looking forward for the help of Indian government. It is important to Indian government to take quick action as the problem is increasing in Saudi Arabia.

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Althaf
 - 
Monday, 20 Apr 2020

Help from modi government is a nightmare 

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News Network
May 7,2020

Dubai/Abu Dhabi, May 7: A group passengers who are scheduled to fly to Kozhikode on the first COVID-19 Indian repatriation flight have begun streaming in to Terminal 2 at Dubai International Airport.

Wearing masks and gloves, the passengers are now waiting for the medical screening and check-in services to begin.

Airport officials gave entry to the departure terminal only to passengers with tickets.

Naif resident Mahamood P.P, 60, was among the first to reach as he was not informed about the change in the flight schedule, he told Gulf News.

“I reached here at 9.30am as I didn’t get any information about the 2.10pm flight getting rescheduled to the evening,” he said.

Suffering from a heart disease, Mahmood, who works as a juice maker at a juice shop near Naif Police station, said he stepped out of his room for the first time in two months.

“As there were many cases in Naif, I never went out because of my health condition. Since I was not in contact with anyone else other than my roommates who also never went out, I didn’t go for the COVID screening also. I was worried that I might be exposed to infection while waiting for the tests,” he said.

He thanked the Indian Consulate for giving him priority to fly home. “I need to go for my heart checkup. So I wanted to fly home as soon as possible.”

However, he said his son, a civil engineer who came here searching for a job, is not flying back though he is on a visit visa.

“Since the UAE government has allowed people on visit visa to stay here till December, he has decided to try his luck in getting a job,” said Mahamood.

Sneha Thomas, who is eight months pregnant, was also among the first to arrive at the airport.

Her husband Somi Jose came to drop her.

Thomas is among 11 pregnant women flying on the Dubai-Kozhikode flight.

Sharjah resident for 30 years, Mohammed Ali Yaseen, who is also the secretary of the Kerala Muslim Cultural Centre in Sharjah, said he is flying home as the restaurant he was running had to be closed due to a demolition plan of the building.

“Three months ago I got the notice to vacate the building and I had to close the restaurant. I was looking for another shop. But then the coronavirus hit. Now there is no point in me opening me a new shop as those who are already operational are not getting any business.”

He said he decided to drop the plan and go home for now. “My visa and license are still valid. I will try to come back when this pandemic ends and things are better.”

Meanwhile, at the Au Dhabi International Airport, families with kids were given priority to proceed towrards check-in. at terminal 3. The passengers coming in right now were mostly women who were on a visit visa. Pregnant women and the elderly too were given priority.

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