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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 7: Karnataka Chief Minister B S Yediyurappa on Tuesday held a meeting with a team of officials from the Union Health Ministry in Bengaluru in view of COVID-19 pandemic.

The team of Union Health Ministry officials praised the state's COVID-19 management measures.

Arti Ahuja, Additional Secretary, Ministry of Health, EMR director Ravindran met the Chief Minister during a two-day visit to the state. The team praised the State Government's efforts to gather information and identify co-morbid figures for the control of COVID-19.

During the meeting, it was discussed that in the following days, priority should be given to prevent death from COVID-19 and to provide adequate treatment for symptomatic infections.

In addition, Central team officials suggested that the COVID-19 guidelines should be followed in containment zones.

Officials informed about the steps being taken to treat COVID infected people in the state and stated that the High Flow Oxygen System is being implemented in all district hospitals and taluk hospitals in the state.  The process will be completed by August 15.

Health Minister B. Sriramulu, Medical Education Minister K. Sudhakar, Chief Secretary to Government Vijayabhaskar and other senior officials were present during the meeting.

Global oil markets remained under intense pressure on Tuesday, with Brent crude dropping below $20 per barrel for the first time in 18 years while other major benchmarks across the world tumbled. 

Brent, the international crude marker, slipped to $18.10, indicating that markets see no immediate let-up to the collapse in oil demand that sent some US oil benchmarks plunging under $0 for the first time on Monday, leaving producers paying for buyers to take their oil away while available storage is scarce.

Coronavirus has sent the oil sector into a state of crisis, with lockdowns implemented by authorities to smother the outbreak slashing demand for crude by as much as a third.

Contracts for the US benchmark West Texas Intermediate for delivery next month tumbled as low as minus $40 a barrel on Monday. Analysts at Citi warned that “if global storage worsens more quickly, Brent could chase WTI down to the bottom”.

The collapse in the May WTI contract was partly a technical product of the fact that it expires on Tuesday, meaning trading volumes were low and making the contract for June delivery more noteworthy, analysts said. That contract held above $20 a barrel on Monday but slid as much as 42 per cent on Tuesday to trade at lows of $11.79, suggesting the blowout in the May contract was more than a blip and that the entire global oil market faced challenges.

Goldman Sachs analysts said the June contact was likely to face downward pressure in the coming weeks, pointing to the “still unresolved market surplus”.

“As storage becomes saturated, price volatility will remain exceptionally high in coming weeks,” they said. “But with ultimately a finite amount of storage left to fill, production will soon need to fall sizeably to bring the market into balance, finally setting the stage for higher prices once demand gradually recovers.”

Warren Patterson, head of commodities strategy at ING, said it was likely that “storage this time next month will be even more of an issue, given the surplus environment”.

“And so in the absence of a meaningful demand recovery, negative prices could return for June,” he added.

European equities traded lower, partly dragged down by weaker energy stocks. The continent-wide Stoxx 600 was down 1.9 per cent, with its oil and gas sub-index dropping 3.3 per cent. In London the FTSE shed 1.7 per cent, while Frankfurt’s Dax slid 2.3 per cent. 

Equities were also broadly lower in Asia, with futures tipping US stocks to fall 1 per cent when trading in New York begins later.

On Wall Street overnight, the S&P 500 closed down 1.8 per cent, partly because of weakness in energy shares, but also due to increased pessimism over the time it will take for countries to emerge from lockdowns.

In fixed income, the yield on the 10-year US Treasury fell 0.03 percentage points to 0.585 per cent as investors retreated to the safety of the debt.