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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, Jun 23: Former Karnataka Chief Minister HD Kumaraswamy on Tuesday demanded that Bengaluru should be put under lockdown for 20 days to contain the spread of coronavirus, the cases of which have risen sharply recently.

 “Stop playing with people's lives. There’s no use in sealing off only some areas. If the people of Bengaluru must live, then a lockdown of at least 20 days is needed. Otherwise, Bengaluru will become another Brazil,” Kumaraswamy said in a tweet. “People’s health is more important, not economy.”

The JD(S) leader was reacting to the BJP government's decision to impose an area-wide lockdown in Chickpet, KR Market, Kalasipalyam and Chamarajpet while streets will be sealed off in VV Puram, Siddapura, Yelahanka, Vidyaranyapura and Chickpet.

Bengaluru has witnessed a huge spike in its Covid-19 tally; the city currently has at least 919 active cases. This has sparked off fears that the contagion might have reached the community.

Kumaraswamy has also demanded welfare measures for the poor. “The poor and the labourers should be given ration immediately. The state’s 50 lakh working class should get ₹5,000 each. The aid already announced by the government hasn’t reached drivers, weavers, Madiwalas and other communities,” he said, adding that mere announcements of a package won’t be enough and “it has to be implemented.”

Bengaluru, Apr 7: Leader of Opposition in Karnataka Siddaramaiah on Monday urged Chief Minister B S Yediyurappa to announce a special package to help farmers, agriculture labourers and also working class in various sectors who are affected by the lockdown.

Mr Siddaramaiah put forth his demands during a telephonic conversation and the Chief Minister positively responding to it informed that he will formulate a programme keeping in mind the suggestions made by the Opposition, a statement from the LoP's office said.

It said, the Chief Minister also spoke to Mr Siddaramaiah regarding the government's decision to stop supply of free food for poor and needy through Indira Canteens.

Mr Siddaramaiah on Saturday had written to Yediyurappa urging him to utilise Indira Canteens efficiently and provide food for poor and needy until the coronavirus crisis and lockdown is over.

The former Chief Minister's letter had come a day after the state government had decided not to provide free food at Indira Canteens as concerns were raised about the quality and misuse that was happening.

It had, however, decided to continue to provide subsidised food- breakfast at Rs 5 and lunch and dinner at Rs 10, as usual.

Mr Yediyurappa during the phone conversation on Monday appraised Siddaramaiah that the decision to supply food by fixing a price was taken to stop misuse that was happening.

Mr Siddaramaiah, however, insisted the government should provide food free of cost to the poor and needy, by taking care that misuse doesn't happen.

The senior Congress leader asked the Chief Minister to take action against errant officials who allowed misuse to happen, the statement said, adding that Yediyurappa has promised to look into it.

Initially, the government last month had decided that the state subsidised Indira Canteens would provide food packets free of cost to the poor and needy in the wake of the lockdown.