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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.

Mangaluru, June 28: Three fresh deaths in last 24 hours have taken the total number of covid-19 deaths in Dakshina Kannada district to 13.

While a 31-year-old youth from Idya in Surathkal and a 57-year-old woman from Bantwal passed away last night, a 52-year-old woman from Jokatte breathed her last today. 

The youth from Suratkal breathed his last in Wenlok. The woman from Bantwal’s Loretto Padav village was unwell for last 1 year. She was tested positive three days ago and passed away at a private hospital. 

The woman from Jokatte was reportedly suffering from tuberculosis. On June 26, she was admitted to a private hospital in the city, where she was tested coronavirus positive.

As per the district health bulletin on Saturday June 27 evening, a total of 12,919 samples have been sent for tests till date, out of which 12,198 have turned out negative, and 576 positive, including 10 persons from other districts. 

Out of these, 148 are currently active. As many as 416 persons have recovered and been discharged.

Bengaluru, Mar 28: Karnataka Deputy Chief Minister Govind Karjol on Ssturday said the coronavirus epidemic has reached the third phase and cautioned people defying the lockdown orders.

"Today the coronavirus epidemic has entered the third phase. By and large people are cooperating," he told reporters at Bagalkote.

The deputy chief minister said there were some people defying the lockdown orders by roaming in groups without wearing masks.

He said he has directed the district authorities to take stringent action against them.

Karjol also said the government has taken adequate measures for the treatment and prevention of this disease.

Steps have been taken for door-to-door supply of grocery items in Bagalkote, he added.