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New Delhi, Jul 5: With highest-ever single-day spike of 24,850 COVID-19 cases in 24 hours, India's coronavirus count stood at 6,73,165, informed the Union Ministry of Health and Family Welfare on Sunday.

Out of the total cases, 2,44,814 are active cases. On the other hand, India's cured/discharged patients count crossed the 4 lakh mark with 4,09,082 patients cured/discharged and one patient migrated.

As many as 613 deaths due to coronavirus were reported in the country in the last 24 hours taking the death toll in the country to 19,268.

Meanwhile, the ministry said that collective and focused efforts for containment and management of COVID-19 by the government of India along with the States/UTs have led to the number of recovered cases among COVID-19 patients rise to 4,09,082 as of today.

"During the last 24 hours, a total of 14,856 COVID-19 patients have been cured. So far, there are 1,64,268 more recovered patients than COVID-19 active cases. This takes the national recovery rate amongst COVID-19 patients to 60.77 per cent," the ministry said.

"With 786 labs in government sector and 314 private labs, there are as many as 1,100 labs in India," it added.

As per the Health Ministry, coronavirus cases in Maharashtra -- the worst affected state from the infection -- has breached the 2 lakh mark with 2,00,064 cases including 8,671 deaths.

Tamil Nadu reported 4,150 fresh COVID-19 cases and 60 deaths today, taking total cases to 1,11,151 and death toll to 1,510. Number of active cases stands at 46,860, according to the State Health Department.

Delhi's coronavirus tally nears the 1 lakh mark with 99,444 cases and the number of people succumbing to the virus stands at 3,067 in the national capital. As many as 9,873 RT-PCR tests and 13,263 rapid antigen tests were conducted today in Delhi. Total tests done so far stands at 6,43,504.

Meanwhile, Indian Council of Medical Research informed that the total number of samples tested up to July 4 is 97,89,066 of which 2,48,934 samples were tested yesterday.

There were seven new COVID-19 cases in the last 24 hours in Chandigarh, taking total cases to 466 including 395 recoveries and six deaths.
Himachal Pradesh Health Department informed that COVID-19 cases reach 1,048 in the state, of which, 309 cases are active and 715 have recovered.

Andhra Pradesh has reported 998 new COVID-19 cases and 14 deaths in the last 24 hours, according to a media bulletin released by AP state COVID nodal officer.

A total of 1,155 COVID-19 cases were reported in the last 24 hours in Uttar Pradesh on Sunday, taking the total number of active cases to 8,161 in the state, an official said. According to the official data, a total of 18,761 people have been cured while 785 people have died due to the virus in the state.

Eighteen more personnel of Indo-Tibetan Border Police (ITBP) tested positive for COVID-19 in the last 24 hours. There are total 151 active cases and 270 have recovered till date.

While, in the last 24 hours, 36 more Border Security Force (BSF) personnel tested positive for COVID-19 and 33 have recovered. There are 526 active cases and 817 personnel have recovered till date.

In Rajasthan, 224 fresh COVID-19 positive cases and 6 deaths were reported today. The total number of cases rose to 19,756 including 3,640 active cases and 453 deaths.

Odisha reported 469 new COVID19 positive cases in the last 24 hours, taking the total number of positive cases in the state to 9,070 including 5,934 recovered cases and 3,090 active cases, according to the health department.

Uttarakhand reported 31 new COVID-19 cases in the last 24 hours, taking total cases to 3,124. Recovery rate among COVID-19 patients stands at 80.79 per cent.

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.

Mumbai, Jun 14: A 42-year old man suddenly collapsed and died due to natural causes onboard Air India's Lagos-Mumbai flight on Sunday, the national carrier said.

The flight was part of Vande Bharat Mission, under which the Central government is operating special repatriation flights to bring back stranded Indians from abroad amid the coronavirus pandemic.

Air India's flight AI 1906 departed from Lagos in Nigeria at 7 pm Indian Standard Time on Saturday and landed in Mumbai at 3.45 am on Sunday.

"A passenger aboard AI 1906 of June 13 from Lagos to Mumbai passed away due to natural causes today.

"A doctor onboard along with our crew, trained to handle such medical emergencies, made a valiant attempt to revive the passenger, aged 42, who had suddenly collapsed, through resuscitation etc but all their efforts went in vain," the airline's spokesperson said.

He was declared dead onboard by the attending doctor. Mumbai International Airport Limited doctors attended to the passenger after the flight landed at 3.45 am and after all the procedures were complete, the body was sent to a hospital as per protocol, the spokesperson noted.

Relatives of the deceased were informed and aircraft was taken for full fumigation as per the norms, the spokesperson said.