Bank unions Gear Up for two-day nationwide strike from Tomorrow, here's what happens

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.

Jan 17: President Ram Nath Kovind, on Friday, dismissed Nirbhaya convict Mukesh Singh's mercy petition, according to multiple media reports.

Mukesh Singh - one of the four convicts in the Nirbhaya gang rape and murder case had filed a mercy petition on Tuesday after Supreme Court dismissed curative petitions filed by him and Vinay Sharma (another convict).

More to follow

MHA forwards mercy petition of Nirbhaya convict to President; recommends rejection

New Delhi, Jan 17: The Union Home Ministry on Friday forwarded to President Ram Nath Kovind the mercy petition of one of the convicts in the Nirbhaya gangrape case, recommending its rejection, officials said.

Mukesh Singh, one of the four death row convicts in the 2012 Nirbhaya gangrape and murder case, had filed the mercy petition a few days ago.

"The Home Ministry has forwarded the mercy petition of Mukesh Singh to the President. The ministry has reiterated the recommendation of the Lieutenant Governor of Delhi for its rejection," the official said.

The Delhi LG had sent the mercy petition of Mukesh to the Home Ministry on Thursday, a day after the Delhi government recommended its rejection.

The four convicts -- Mukesh Singh (32), Vinay Sharma (26), Akshay Kumar Singh (31) and Pawan Gupta (25) were to be hanged on January 22 at 7 am in Tihar Jail. A Delhi court had issued their death warrants on January 7.

However, the Delhi government had informed the high court during a hearing that execution of the convicts will not take place on January 22 as a mercy plea has been filed by Mukesh.

May 7: India is projected to record the highest number of births in the 9 months since COVID-19 was declared a pandemic in March, with more than 20 million babies expected to be born in the country between March and December, according to top UN body.

The United Nations Children's Fund (UNICEF) warned that pregnant mothers and babies born during the pandemic across the world were threatened by strained health systems and disruptions in services.

An estimated 116 million babies will be born under the shadow of COVID-19 pandemic, UNICEF said on Wednesday, ahead of Mother's Day, observed on May 10.

These babies are projected to be born up to 40 weeks after COVID-19 was recognised as a pandemic on March 11.

The highest numbers of births in the 9 months since the pandemic was declared are expected to occur in India, where 20.1 million babies are projected to be born between March 11 and December 16. Other countries with the expected highest numbers of births during this period are China (13.5 million), Nigeria (6.4 million), Pakistan (5 million) and Indonesia (4 million), it said.

"Most of these countries had high neonatal mortality rates even before the pandemic and may see these levels increase with COVID-19 conditions," UNICEF said.

It is estimated that there will be 24.1 million births in India for the January-December 2020 period.

UNICEF warned that COVID-19 containment measures can disrupt life-saving health services such as childbirth care, putting millions of pregnant mothers and their babies at great risk.

Even wealthier countries are affected by this crisis. In the US, the sixth-highest country in terms of the expected number of births, over 3.3 million babies are projected to be born between March 11 and December 16.

"New mothers and newborns will be greeted by harsh realities," UNICEF said, adding they include global containment measures such as lockdowns and curfews; health centres overwhelmed with response efforts; supply and equipment shortages; and a lack of sufficient skilled birth attendants as health workers, including midwives, are redeployed to treat COVID-19 patients.

"Millions of mothers all over the world embarked on a journey of parenthood in the world as it was. They now must prepare to bring a life into the world as it has become – a world where expecting mothers are afraid to go to health centres for fear of getting infected, or missing out on emergency care due to strained health services and lockdowns," UNICEF Executive Director Henrietta Fore said.

"It is hard to imagine how much the coronavirus pandemic has recast motherhood" Fore said.

UNICEF said its analysis was based on data from World Population Prospects 2019 of the UN Population Division.

An average full-term pregnancy typically lasts a complete 9 months, or 39 to 40 weeks. For the purposes of this estimate, the number of births for a 40-week period in 2020 was calculated.

The 40-week period of March 11 to December 16 is used in this estimate based upon the WHO's March 11 assessment that COVID-19 can be characterised as a pandemic.

UNICEF warned that although evidence suggests that pregnant mothers are not more affected by COVID-19 than others, countries need to ensure they still have access to antenatal, delivery and postnatal services.

Similarly, sick newborns need emergency services as they are at high risk of death. New families require support to start breastfeeding, and to get medicines, vaccines and nutrition to keep their babies healthy, it said.

"This is a particularly poignant Mother's Day, as many families have been forced apart during the coronavirus pandemic, but it is also a time for unity, a time to bring everyone together in solidarity. We can help save lives by making sure that every pregnant mother receives the support she needs to give birth safely in the months to come," Fore said.

Issuing an urgent appeal to governments and health care providers to save lives in the coming months, UNICEF said efforts must be made to help pregnant women receive antenatal checkups, skilled delivery care, postnatal care services, and care related to COVID-19 as needed.

Ensure health workers are provided with the necessary personal protective equipment and get priority testing and vaccination once a COVID-19 vaccine becomes available so that can deliver high quality care to all pregnant women and newborn babies during the pandemic, it said.

While it is not yet known whether the virus is transmitted from a mother to her baby during pregnancy and delivery, UNICEF advised all pregnant women to follow precautions to protect themselves from exposure to the virus.

Closely monitor themselves for symptoms of COVID-19 and seek advice from the nearest designated facility if they have concerns or experience symptoms. Pregnant women should also take the same precautions to avoid COVID -19 infection as other people: practice physical distancing, avoid physical gatherings and use online health services, it said.

UNICEF said even before COVID-19 pandemic, an estimated 2.8 million pregnant women and newborns died every year, or 1 every 11 seconds, mostly of preventable causes.

The agency called for immediate investment in health workers with the right training, who are equipped with the right medicines to ensure every mother and newborn is cared for by a safe pair of hands to prevent and treat complications during pregnancy, delivery and birth.