South India must unite under Dravidian identity: Kamal Haasan

New Delhi, Jul 14: India's COVID-19 tally has reached 9,36,181 as 29,429 new coronavirus cases were reported in the last 24 hours, informed the Union Ministry of Health and Family Welfare on Wednesday.

The death toll went up to 24,309, including 582 fatalities in the last 24 hours.

Out of the total cases, 3,19,840 are currently active and 5,92,032 are cured/discharged/migrated.

As per the Ministry, Maharashtra -- the worst-affected state from the infection -- has a total of 2,67,665 COVID-19 cases and 10,695 fatalities. While Tamil Nadu has a tally of 1,47,324 cases and 2,099 deaths due to COVID-19.

Delhi has reported a total of 1,15,346 cases and 3,446 deaths due to COVID-19.

As per the information provided by the Indian Council of Medical Research (ICMR) 3,20,161 samples have been tested for COVID-19 till July 14, of these 1,24,12,664 samples were tested on Tuesday.

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.

Seventy-seven per cent children below five years of age in Jammu and Kashmir were not able to access basic healthcare services like immunisation during the lockdown imposed to curb the spread of COVID-19, CRY said on Monday citing a study.

The 'Rapid Online Perception Study about the Effects of COVID-19 on Children' was conducted during the first and second phases of the lockdown based on responses of parents and primary caregivers from all across the country, including Jammu and Kashmir, the NGO said in a statement.

It said a total of 387 respondents from Jammu and Kashmir participated in the study.

"Seventy-seven per cent children of age 0-5 years were not able to access basic healthcare services such as immunisation during lockdown - necessarily imposed to curb the spread of COVID-19 pandemic in Jammu and Kashmir," Child Rights and You (CRY) said.

It said as immunisation programmes witnessed a major setback during the lockdown across the country, the results of the survey across 23 states and Union Territories found nearly 50 per cent of parents with children below five years of age unable to access immunisation services.

"Worryingly, the figure was considerably high in Jammu and Kashmir with 77.14 per cent children below five years unable to get immunisation services," it added.

According to the study, in Jammu and Kashmir, nearly 35 per cent of the respondents said their children did not receive medical help during the lockdown, resulting in difficulties to cope with their children's illnesses and health hazards.

The study also talks about more systemic arrangements and logistical preparedness to ensure that children with no or compromised digital reach are not deprived from their Right to Education.

With online classes introduced as a substitute of schools during the lockdown, access to education for children remained a major issue of concern, as many of them, especially the ones from marginalised and financially poorer backgrounds found it difficult without smartphones and internet access.

The survey's findings revealed that nationally only 41 per cent households with children of school-going age could access online classes on a regular basis.

"Almost 90 per cent parents and primary caregivers reported that the lockdown has increased the screen time of their child to great or some extent. About half of the households recorded an increase of children's exposure to online activities during lockdown," it said.

The NGO said around 76 per cent parents agreed that they could keep a watch of their children's online activity to some extent.