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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, Jun 7: The Sri Krishna temple at Udupi would not re-open on June 8 although permission has been given to all temples to allow devotees for darshan, Admaru mutt junior seer Paryaya Swami Ishapriya Teertha said on Saturday. He told reporters in Udupi that the mutt has decided not to allow devotees at present to join the fight against COVID-19 by the government, health department and the police.

The seer said the situation would be assessed in the next 20-30 days after which a decision to re-open the place of worship would be taken.

The health of the devotees and the staff at the mutt and temple would have to be protected.

However, pujas and rituals would continue to be held at the temple, he said.

Meanwhile, Dharmasthala dharmadhikari D Veerendra Heggade said in a press release that the Lord Manjunatheshwara temple in Dharmasthala in Dakshina Kannada district would open for devotees from June 8. He said 800-1,000 devotees would be allowed to have darshan at the temple every day, keeping with the regulations of the government.

Mass-feeding (annadhanam) in the Annapoorna hall would also be organised, maintaining social distance in view of the virus spread.

Mangaluru, Apr 4: With the district administration formally confirming three new cases of covid-19, the total number of coronavirus positive cases in Dakshina Kannada today mounted to 12. 

A 43-year-old man from Thumbey in Bantwal taluk of Dakshina Kannada had been to Delhi on March 11 due to personal work and returned on March 22. His throat swabs were sent for testing on April 2 though he was healthy. Today the report of the test claimed that he was infected with covid-19. However, he is still said to be healthy.

In another case, a man from Udupi, who had returned from Dubai on March 21, was under medical observation after he landed at Mangaluru International Airport. The district administration today claimed that he too is suffering from the covid-19. 

A resident of Thokkottu, on February 6, had travelled to Mumbai and then visited Delhi. On March 6 he had returned to Mangaluru. On April 2, his throat swabs were sent for testing and the report today showed positive.

All three have been admitted to Wenlock Hospital for treatment.