Christian missionaries a threat to unity of the country: BJP MP

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.

New Delhi, Jun 24: Union Civil Aviation Minister Hardeep Singh Puri on Tuesday said that nearly 1,25,000 Indians have returned from different countries under the Vande Bharat Mission.

He informed that 6,037 people returned to India from overseas on June 23.

"Vande Bharat continues to be a mission of hope and happiness for stranded and distressed Indians around the world. So far, nearly 125K Indians have come back on these evacuation flights and nearly 43K have flown out of India. Today (on Tuesday) 6,037 people returned from different countries," Puri said in a tweet.

As many as 2,50,087 Indian nationals stranded abroad have been repatriated since the beginning of Vande Bharat Mission last month, the Ministry of External Affairs (MEA) said last week.

The Vande Bharat Mission, which started from May 7 to evacuate Indians stranded abroad due to coronavirus pandemic, is in its third phase.
The recent phase commenced on June 11.

Under the third phase, India would have 550 flights including 191 feeder flights.

New Delhi, May 24: New rules for domestic travel during the lockdown were released by the government today, including advising passengers to download the Aarogya Setu application on their mobile devices and asking states to ensure thermal screening at departure point of airports, railway stations and bus terminals. The guidelines were shared by Civil Aviation Minister Hardeep Singh Puri, who also shared new rules for international travel.

The minister had recently said that international flight operations may start by mid-June or end-July if the COVID-19 virus "behaves in a predictable manner".

"Prescribed clinical protocol will be followed in case any domestic or international traveller shows symptoms of COVID-19. States can also develop their own protocol for quarantine and isolation as per their own assessment," Mr Puri said.

The guidelines come a day before the resumption of air travel after nearly two-months hiatus following lockdown to prevent the spread of coronavirus.

The Indian Railways has also issued a list of 100 pairs of trains that it will operate from June 1, putting in operation popular trains such as Durontos, Sampark Krantis, Jan Shatabdis and Poorva Express.

Dos and Don'ts shall be provided along with tickets to travellers by agencies concerned, said the Health Ministry's guidelines for domestic travel (air/train/inter-state bus travel).

Latest guidelines on domestic & international travel have been issued by @MoHFW_INDIA.

I hope travellers strictly follow these self-regulatory norms & strengthen India's hands in this fight against COVID19. Remember, each one of us is a soldier against the pandemic.@MoCA_GoIpic.twitter.com/xVbTG1K44n

— Hardeep Singh Puri (@HardeepSPuri) May 24, 2020
Travellers shall give 14-day quarantine undertaking before boarding

The states and Union Territories shall ensure that all passengers undergo thermal screening at the point of departure and only asymptomatic passengers are allowed to board the flight, train or bus. Asymptomatic passengers, however, will be permitted to travel after they give an undertaking to self-monitor for 14 days, the ministry said.

Those having moderate or severe symptoms will be admitted to dedicated COVID health facilities and managed accordingly, the guidelines said.

Those having mild symptoms will be given the option of home isolation or isolated in the COVID Care Centre (both public and private facilities) as appropriate and tested as per ICMR protocol, they said.

"If positive, they will continue in COVID Care Centre and will be managed as per clinical protocol. If negative, the passenger may be allowed to go home, isolate himself/herself and self-monitor his/her health for further 7 days," the health ministry said.

In case, any symptoms develop they shall inform the district surveillance officer or the state or the national call centre (1075), it said.

Use of face covers, following respiratory hygine during travel

During boarding and travel, all passengers shall use face covers or masks and will also follow hand hygiene, respiratory hygiene and maintain environmental hygiene, the ministry said in its guidelines.

At airports, railway stations and bus terminals, required measures to ensure social distancing shall be taken, the guidelines said.

Airports, railway stations and bus terminals to be regularly sanitised

Airports, railway stations and bus terminals should be regularly sanitised or disinfected and the availability of soaps and sanitisers shall be ensured, the health ministry said.

The ministry said that states can also develop their own protocol with regards to quarantine and isolation as per their assessment.

Guidelines for International Travel

The guidelines for international travel include mandatory undertaking for quarrantine for 14 days. "Only for exceptional and compelling reasons such as cases of human distress, pregnancy, death in family, serious illness and parent(s) accompanied by children below 10 yrs, as assessed by the receiving states, home quarantine may be permitted for international travellers for 14 days," the Civil Aviation minister said.

Asymptomatic travelers will be allowed to board flight/ship

At the time of boarding the flight or ship, only asymptomatic travellers will be allowed to board after thermal screening, the health ministry said.. Passengers arriving through land borders will also have to undergo the same procedure, it said.

"Self-declaration form in duplicate shall be filled by the person in the flight/ship and a copy of the same will be given to Health and immigration officials present at the airport/seaport/landport. The form will be made available through the Aarogya Setu app," the new order said.

Passengers found to be symtomatic during screening shall be immediately isolated and taken to medical facility as per health protocol. "These passengers will be kept under institutional quarrantine for a minimum period of 7 days and should undergo necessary tests as per ICMR protocol," the guidelines said.

Sanitisation and disinfection must inside flights

Authorities must take adequate measures to such as environmental sanitation and disinfection at the airports as well as within the flights, the guideline said.Suitable announcement about COVID-19 including precautionary measures to be followed shall be made at airports/ports, it added.

While on board flight, ships, passengers and crew required precautions such as wearing of masks, environmental hygiene, respiratory hygiene, hand hygiene, the ministry said.

This morning, India registered the biggest-single day jump in the number of coronavirus cases as 6,767 new patients were reported in the last 24 hours. This is the third consecutive day that India has reported more than 6,000 COVID-19 cases with a record number of new patients each day. The county has officially logged 1,31,868 cases, 3,867 deaths linked to the highly infectious illness since the pandemic began. Of these, 147 patients died in the last 24 hours. The global number of novel coronavirus cases has passed 5.25 million with more than 339,000 deaths. Since the outbreak first emerged in China in December, 5,260,970 cases have been recorded across 196 countries and territories, with 339,758 deaths attributed to the virus.