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Mangaluru, Jan 24: Aditya Rao, who was arrested for planting Improvised explosive device (IED) at Mangaluru airport on January 20, was brought to the airport on Friday for recreation of the crime scene as part of the investigation process.

Yesterday, one more case was registered against Rao in connection with a hoax call to the terminal manager of the airport on January 20, police said.

"One more case has been registered against Aditya Rao at Bajpe Police station for a hoax call to the terminal manager of Mangaluru International Airport on January 20," said PS Harsha, Mangalore Commissioner of Police on Thursday.

Earlier, Harsha informed that Rao, who surrendered before the Bengaluru Police, is now in the custody of Mangaluru Police.

"Our investigation team arrested Aditya Rao in Bengaluru in connection with the planting of an explosive device at Mangaluru airport. We produced the accused before Bengaluru's first JMFC court and the court issued a transit warrant," Harsha said.

"We have brought him to Mangaluru from Bengaluru and now the accused is in our custody. Our investigation team will interrogate him. We will investigate all aspects. He will be produced before Mangaluru 6th JMFC Court," he added.

Rao hails from Udupi and has engineering and MBA degrees.

According to the police, the IED was recovered from a bag at the Mangaluru airport. It was later defused in an open field by the personnel of the bomb disposal squad.

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 21: The total number of Covid-19 cases in Karnataka breached the 70,000 mark on Tuesday as the state reported 3,649 fresh infections, while 61 fatalities took the death toll to 1,464, the health department said.

The day also saw 1,664 patients getting discharged after recovery. Out of 3,649 fresh cases reported on Tuesday, a whopping 1,714 were from Bengaluru urban alone. As of July 21 evening, cumulatively 71,069 Covid-19 cases have been confirmed in Karnataka, which includes 1,464 deaths and 25,459 discharges, the health department said in its bulletin.

It said that out of the 44,140 active cases, 43,557 patients are in isolation at designated hospitals and are stable, while 583 are in Intensive Care Units.

Twenty-two out of 61 deaths reported on Tuesday are from Bengaluru urban, followed by five each from Dakshina Kannada, Mysuru and Dharwad, four each from Kolar and Belagavi, three each from Hassan, Tumakuru and Haveri, Bidar 2, and one each from Chikkaballapura, Chikkamagaluru, Chamarajanagara, Gadag and Vijayapura.

Most of the deceased either had a history of Severe Acute Respiratory Infection (SARI) or Influenza-like illness (ILI). Out of 3,649 cases tested positive on Tuesday, contacts of the large number of the cases are still under tracing.

Among the districts where new cases were reported, Bengaluru urban accounted for 1,714, Ballari 193, Dakshina Kannada 149, Mysuru 135, Yadgir 117, Uttara Kannada 109, Hassan 107, Kolar 103, followed by others.

Bengaluru urban district topped the list of positive cases, with 34,943 infections, followed by Dakshina Kannada 3,829 and Kalaburagi 2,966. Among discharges Bengaluru urban was on top with 7,476 discharges, followed by Kalabuagi 1,834 and Udupi 1,731.

A total of 10,64,734 samples were tested so far, out of which 43,904 were tested on Tuesday alone, the bulletin said. It said that 19,328 of the 43,904 samples tested today were rapid antigen tests.