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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 6: With coronavirus cases surging and hospitals saturated with patients, the Karnataka government is setting up intensive care units (ICUs) at COVID Care Centres (CCC) in the state for severe cases needing oxygen, Deputy Chief Minister C N Ashwath Narayan said on Sunday.

Covid Care Centres are usually meant for patients who are asymptomatic or have mild symptoms.

"Initially, 10 ICUs will be set up at every CCC in Bengaluru and in other cities and towns across the state subsequently," Narayan said in a statement in Bengaluru.

The state government has set up CCCs at the GKVK campus, the Haj Bhavan and the Art of Living Foundation campus in the city so far. The government has also set up a more than 10,000 bed CCC facility in BIEC, on Tumkur road, on the outskirts of the city.

"About 100 ICUs will be set up soon at the new CCCs opened at the Bangalore International Exhibition Centre (BIEC), Ayurveda College, and Koramangala Indoor Stadium," said Narayan.

The sprawling BEIC in the city's northwest will soon have 10,100 beds for treating Covid patients and asymptomatic cases from state-run hospitals.

The state government has also relieved all Health Department employees from administrative and non-medical duties to depute them at the CCCs.

On complaints about the poor quality of food served to Covid patients and the medical staff, Narayan warned the vendors of cancelling their contracts if they did not supply good quality food as per the guidelines.

The minister also directed the Health Department to ensure adequate supply of drugs and medical equipment to all CCCs and state-run hospitals for treating Covid patients.

With a record 1,925 new cases reported on Sunday, the state's tally touched 23,474, including 13,251 active after 9,847 were discharged (including 603 on Sunday), while 372 succumbed to the infection since March 9, with 37 more deaths on Sunday.

Of the total cases across the state, Bengaluru accounted for 1,235, taking its tally to 9,580, including 8,167 while 145 died so far.