Political design behind Jamia, Shaheen Bagh protests to ruin nation's harmony: PM Modi

New Delhi, May 9: With 3,320 coronavirus cases and 95 deaths reported in the last 24 hours, India's COVID-19 cases rose to 59,662 on Saturday, informed the Union Ministry of Health and Family Welfare.

The total number of active cases in the country now stands at 39,834 while the number of cured/discharged/migrated stands at 17,847.

The country has reported 1,981 deaths so far, added the Ministry.

Maharashtra has the highest number of cases with 19, 063 followed by Gujarat with 7,402 cases and Delhi with 6,318 cases.

Meanwhile, the country continues to remain in a lockdown slated to end on May 17.

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, Jul 19: India's Covid-19 case fatality rate is "progressively falling" and is currently at 2.49 per cent, which is one of the lowest in the world, the Union Health Ministry said on Sunday, crediting efficient clinical management of hospitalised cases for it.

There are 29 states and union territories with a case fatality rate (CFR) lower than India's average, with five of them having a CFR of zero and 14 having fatality rate of less than 1 per cent.

The focused efforts of the Centre and state and UT governments on efficient clinical management of hospitalised cases have ensured that India's case fatality rate has fallen below 2.5 per cent, the ministry said.

With effective containment strategy, aggressive testing and standardized clinical management protocols based on holistic standard of care approach, the CFR has significantly dipped, it said.

"The CFR is progressively falling and currently, it is 2.49 per cent. India has one of the lowest fatality rates in the world," the ministry said.

From 2.82 per cent over a month earlier, India's Covid-19 case fatality rate declined to 2.72 per cent on July 10 and has further reduced to 2.49 per cent presently.

Under the guidance of the Centre, the state and UT governments have ramped up testing and hospital infrastructure by combining public and private sector efforts, the ministry said.

Many states have conducted the population surveys to map and identify the vulnerable population like the elderly, pregnant women and those with co-morbidities.

This, with the help of technological solutions like mobile apps, has ensured keeping the high-risk population under continuous observation, thus aiding early identification, timely clinical treatment and reducing fatalities, the ministry said.

"At the ground level, frontline health workers like ASHAs (Accredited Social Health Activists) and ANMs (Auxiliary Nursing Midwives) have done a commendable job of managing the migrant population and to enhance awareness at the community level.

"As a result, there are 29 States and UTs with CFR lower than India's average. This shows commendable work done by public health apparatus of the country," the ministry said.

Manipur, Nagaland, Sikkim, Mizoram, Andaman and Nicobar Islands have zero case fatality rate.

States and UTs having a CFR below the national average include Tripura (0.19 pc),  Assam (0.23 pc), Kerala (0.34 pc), Odisha (0.51 pc), Goa (0.60 pc), Himachal Pradesh (0.75 pc), Bihar (0.83 pc), Telangana (0.93 pc), Andhra Pradesh (1.31 pc), Tamil Nadu (1.45 pc), Chandigarh (1.71 pc), Rajasthan (1.94 pc), Karnataka (2.08 pc) and Uttar Pradesh (2.36 pc).

India saw a record single-day jump of 38,902 Covid-19 cases pushing its tally to 10,77,618 on Sunday, while the total number of recoveries increased to 6,77,422.

A total of 23, 672 patients have recuperated in the past 24 hours, the highest so far in a day, according to the health ministry data updated at 8 AM.

According to the Indian Council of Medical Research (ICMR), a cumulative total of 1,37,91,869 samples have been tested up to July 18 with 3,58,127 samples being tested on Saturday.