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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, Feb 7: Karnataka's Directorate of Health and Family Welfare Services on Thursday issued guidelines for testing, isolation, hospital admission and discharge in view of the outbreak of Novel Coronavirus (nCoV) in Wuhan city of China, a virus that has infected nearly 20,000 globally and has killed more than 500 in China.

According to the guidelines, the sample of any passenger, whether symptomatic or asymptomatic, with a history of travel to or residence in Wuhan city of China in the last 14 days, has to be collected and tested.

And the sample of any health personnel, who develops symptoms of the virus after being associated with the infected persons, has to be collected.

The circular further says that the clinical sample of any suspect/probable case of nCoV will be sent to the laboratory confirmation and the case will be kept in isolation. If tested positive, the treatment has to be provided as per the existing guidelines.

The virus originated from Wuhan, a Chinese city, in December and has since then spread to various parts around the world.

China has imposed quarantine and travel restrictions, affecting the movement of 56 million people in more than a dozen cities, amid fears that the transmission rate will accelerate.

Bengaluru, Mar 3: Bengaluru mayor Gautam Kumar on Tuesday said that the decision to ban protests in front of Town Hall was made by the council and not only by him.

"The decision to ban the protest in front of the Town Hall was made by the entire council and not only my decision. Also, the things which are approved by the councillor are also read by the ruling party leaders," Bengaluru mayor told media.

"Still it is the discretion of the Commissioner to take a call after the council also. As of now, we have banned any protests in front of Town Hall," he added.

Meanwhile, Congress leaders staged a protest against Bruhat Bengaluru Mahanagara Palike (BBMP) Mayor Gautam Kumar and BJP at Council BBMP building against the decision.

"If people will start protesting, it will badly affect the traffic of the city," said Kumar, while commenting on the protest. If they want to talk about the matter, let us have a healthy discussion. I don't have a problem with and I don't think the ruling party has a problem too," he added.

On Sunday, pro-Kannada activist and former MLA Vatal Nagraj staged a protest in front of Sir KP Puttanna Chetty Town Hall (Bangalore Town Hall) against the decision taken by Bengaluru mayor.

Talking to reporters, Nagraj had said: "He does not know the history of the Town Hall. It is a historic building and protests can be staged there."

"Mayor's decision is against Bengaluru's tradition and culture, that's why we are condemning it and are protesting against this decision. We will not allow Mayor's programs in Bengaluru and he will be shown black flags", he added.