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The deadly coronavirus that entered India while there was still nip in the air has beaten rising mercury, humid conditions, unique Indian genome and has entered monsoon season with more potency as fresh cases are only breaking all records in the country.

India recorded a single-day spike of record 24,850 new coronavirus cases on Sunday, taking its total tally to 6.73 lakh corona-positive cases.

Top Indian microbiologists were hopeful in March that after the 21-day lockdown, as summer approaches, the rise in temperature would play an important role in preventing the drastic spread of COVID-19 virus in India.

Several virologists hinted that by June this year, the impact of COVID-19 would be less than what it appeared in March-April.

The claims have fallen flat as the virus is mutating fast, becoming more potent than ever.

According to experts, the novel coronavirus is a new virus whose seasonality and response to hot humid weather was never fully understood.

"The theory was based on the fact that high temperatures can kill the virus as in sterilisation techniques used in healthcare. But these are controlled environment conditions. There are many other factors besides temperature, humidity which influence the transmission rate among humans," Dr Anu Gupta, Head, Microbiologist and Infection Control, Fortis Escorts Heart Institute, told IANS.

There is no built-up immunity to COVID-19 in humans.

"Also, asymptomatic people might be passing it to many others unknowingly. New viruses tend not to follow the seasonal trend in their first year," Gupta emphasized.

Globally, as several countries are now experiencing hot weather, the World Health Organization (WHO) reported a record hike in the number of coronavirus cases, with the total rising by 2,12,326 in 24 hours in the highest single-day increase since COVID-19 broke out.

So far over 11 million people worldwide have tested positive for the disease which has led to over 5,25,000 deaths, according to data from Johns Hopkins University. The US remained the worst-hit country with over 28 lakh cases, followed by Brazil with 15.8 lakh.

According to Sandeep Nayar, Senior Consultant and HOD, Respiratory Medicine, Allergy & Sleep Disorders, BLK Super Speciality Hospital in New Delhi, whether temperature plays a role in COVID-19 infection is highly debated.

One school of thought said in the tropical regions of South Asia, the virus might not thrive longer.

"On the other hand, another school of thought has found that novel Coronavirus can survive in a hot and humid environment and tropical climate does not make a difference to the virus. According to them, this is what distinguishes the novel coronavirus from other common viruses, which usually wane in hot weather," stressed Nayar.

Not much has been studied in the past and no definite treatment or vaccine is available to date.

"Every day, new properties and manifestation of the disease come up. As of now, the only way to prevent this monster is by taking appropriate precautions. Hand hygiene, social distancing, cough etiquette and face masks definitely reduce spread of COVID-19 infection," Nayar told IANS.

Not just top Indian health experts, even Indian-American scientists had this theory in mind that sunshine and summer may ebb the spread of the coronavirus.

Ravi Godse, Director of Discharge Planning, UPMC Shadyside Pennsylvania in the US told IANS in April: "In the summer, the humidity can go up as well, meaning more water drops in the air. If the air is saturated with water and somebody sneezes virus droplets into such air, it is likely that the droplets will fall to the ground quicker, making them less infectious. So the short answer is yes, summer/sunshine could be bettera.

According to Dr Puneet Khanna, Head of Respiratory Medicine and Pulmonology, Manipal Hospital, Delhi, COVID-19 death rates are not too different in tropical countries but since the disease affected them late it was yet to show its peak in these areas.

"The virus can survive well in hot and humid countries and this is proven now," he stressed.

Bengaluru, Jul 8: 15 police personnel from Bangalore's Whitefield division tested positive for COVID-19 on Wednesday.

Out of these, 12 are from the Hindustan Aeronautics Limited (HAL) police station, sources said.

A total of 27 police staff of the Whitefield division have tested positive so far and five have been discharged. The HAL police station closed on June 27 after one police staff tested COVID positive. All personnel of the police station were tested in the following days and 12 tests returned positive.

Hubli, April 6: A disinfection tunnel was installed at the entrance of the Agricultural Produce Market Committee (APMC) market here on Sunday.

The tunnel, installed with the help of Young India.org, sprays people with a small percentage of Sodium hypochlorite solution through nozzles in order to sanitise them before they enter the market.

"It is helpful for all the farmers, vegetable vendors and other people who are coming and going to the APMC market. This is very useful," said Jagdish Shettar, Minister of Large and Medium Scale Industries, Karnataka.

With regards to any plans of more devices being added in the near future, Shettar added: "Firstly, we will have to see what would be the public's reaction and then, later on, we will decide."

President of Confederation of Indian Industry, Hubli VSV Prasad said that the setting up of this tunnel can help curtail the spread of Coronavirus "by disinfecting the bacteria of the body".

While it was on the trial stage right now, Prasad hopes that the trial is successful and the chamber is set up in more public places. With regards to the cost of the tunnel, he said: "The cost is around Rs 1.5 Lac to Rs 2 Lac and hopefully it will come down once we go for production," he added.

Srinivas Joshi, a representative of Young India.org, speaking to news agency said: "We have added 1.8 percent of Sodium hypochlorite solution in 100 litres of water. It is pumped through high-pressure pumps and sprayed like a mist via nozzles for 3-5 seconds which is very less time to cause any kind of allergy."

"People who are allergic to chemicals should avoid going through this chamber. We are putting signboard very soon," he added.

The number of positive cases of coronavirus in the country continues to surge. As per the Ministry of Health and Family Welfare, the total number of confirmed COVID-19 cases is 3,577 with 83 deaths.