I-T raids premises of Cafe Coffee Day owner V G Siddhartha

Bengaluru, Jun 23: Karnataka Medical Education Minister K Sudhakar's wife and daughter have tested positive for COVID-19, a day after his father was confirmed to have been infected with the virus.

"Test results of our family members have come. Unfortunately, my wife and daughter have tested positive for #Covid19 and are undergoing treatment," the minister tweeted on Tuesday.

He said he and his two sons have tested negative.

Sudhakar's father P N Keshava Reddy tested positive for coronavirus on Monday. He was admitted to the hospital with a cough and fever.

Earlier, the domestic help of the minister had tested coronavirus positive and was admitted to a hospital.

In April, Sudhakar was quarantined along with three other ministers for coming in contact with a journalist who was coronavirus positive.

Karnataka reported 249 new COVID-19 cases and five deaths on Monday taking the total number of cases in the state to 9,399 and the death toll to 142.

Test results of our family members have come. Unfortunately, my wife and daughter have tested positive for #Covid19 and are undergoing treatment. My two sons and myself have tested negative. I am grateful to everyone for their best wishes and prayers.

— Dr Sudhakar K (@mla_sudhakar) June 23, 2020

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.

Bengaluru, Jun 25: Former Karnataka chief minister and Janata Dal (Secular) leader HD Kumaraswamy on Wednesday claimed that there are shortage of beds and ventilators to treat COVID-19 patients in the state.

In a series of tweets, he targetted the Karnataka government on COVID-19 management.

"The state government has failed to provide adequate treatment to those infected with corona. There are no beds and no ventilators to treat more than four thousand patients. Self-induced lockdown is the only solution," he tweeted.

In his subsequent tweet, he said, "Residents of the state, including Bangalore, now have only one way to escape from COVID-19. Stay at home and celebrate yourself as a self-proclaimed lockdown. Money is not more important than life. Your life is in your hands now."

In another tweet, former Chief Minister alleged that the government has fixed Rs 10-15,000 per day for COVID-19 treatment in private hospitals.

"The state government is also saying this indirectly. The 'home remedy' in the home is to stay at home and be safe. The government has fixed Rs 10-15,000 per day for the treatment of this infection in private hospitals. How poor can afford it while upper class can't afford," he tweeted.

"If four members of a family infected with corona, the cost of treatment for a 15-day treatment at a private hospital is Rs 5-6 lakh. Where do the poor bring that Much money? We must save our lives while the government is sitting incapable. This is my concern for the people of the state," he said in another tweet.

In a video message that HD Kumaraswamy demanded the state government to give all kinds of safety and security to the students who are writing the SSLC exam tomorrow.
HD Kumaraswamy also urged students to be careful.

About 8,48,203 students will appear in the Secondary School Leaving Certificate (SSLC) examination tomorrow, said Karnataka Health Minister B Sriramulu on Wednesday.