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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.

Chithradurga, Mar 25: COVID-19-positive cases in Karnataka jumped to 42 from 33 on Tuesday, with nine cases added to the list overnight. The daughter of G M Siddeshwara, Davanagere MP, is the latest case.

Sources from the Siddeshwara family said that the MP’s daughter, along with her two children, who started from Guyana, first landed at New York airport and from there, she took a flight to New Delhi.

From Delhi, she flew to Bengaluru. And then, she and her children travelled with her father in a chaffeur-driven car on March 21 to their house in Bheemasamudra.


Siddeshwara said that protocol for COVID-19 had been followed and all who returned were under self-quarantine at his house. However, the administration was not informed of her travel history till the samples were given for test, Chitradurga Deputy Commissioner Vinoth Priya R told TNIE. The DC said the test results of the MP’s daughter were collected by district health authorities and sent to Shivamogga Institute of Medical Sciences on March 22.

The test turned out to be positive for COVID-19 and she was shifted to the isolation ward at Chigateri district hospital in Davanagere. This is the first positive case in Chitradurga.The patient, who is the wife of an Indian Diplomat in Guyana, complained of flu-like symptoms and remained self-quarantined at her house at Bheemasamudra. Her condition was informed to the health department, which collected her samples and forwarded it to the SIMS for tests, results of which arrived on Tuesday evening.

The DC said that samples of family members including the two children, and those working at the MP’s house would be collected and sent for testing to ensure proper protocol is followed. The administration has declared a ‘red zone of a 5km radius around Siddeshwara’s house at Bheemasamudra. DHO Dr Palaksha said that the patient is not suffering any serious problems and is normal. However, we have put her in the isolation ward of Chigateri District Hospital in Davangere, he said.