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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.

New Delhi, Jun 20: As part of measures to check the spread of covid-19, Indian Railways is likely to stop distributing blankets and pillows in trains to AC passengers in coming days and it will make arrangements for sale at stalls on platforms.

The railways already stopped distributing blankets and pillows in 15 pair Special Rajdhani trains and 100 pair of fixed timetabled special trains, which is being operted at present. The system of not distributing blanks and pillows may continue in future once train operations normalise, said the official.

Passengers are encouraged to bring their own blankets and pillows. However same will be made available for purchase at shops so that if passengers want they can buy it, said an official.

The railways also made arrangements to sell sanitisers, masks and gloves at shops. The national transporter also said sale price should not exceed maximum retail price.

As per the Railway Board circular to zonal railways, " Amongst the items which fulfill the needs of travelling public and in keeping with the emphasis for providing safe and hygine travel facilities to passengers, it must be ensured that take away bedrolls kits/items other COVID-19 related protective items such as masks, sanitiser, gloves etc are also made available for sale through multi purpose stalls."

All items should be in good quality and will be sold only at MRP rate, circular said. The railways has also permanently removed curtains inside the AC coaches.

Bengaluru, Jun 24: Dr K Sudhakar on Wednesday held a video conference with senior officials to review the preparedness for conducting of SSLC examinations safely which is beginning from Thursday.

"8,48,203 students will appear for the SSLC examination starting tomorrow in 2,879 centres across the state. All the guidelines issues by state government must be followed strictly" Sudhakar said in the meeting.

"It is the collective responsibility of officials of all departments to ensure that every student is safe, from the time he or she leaves home for the exam centre and returns home after the exams. The vehicles used to ferry students, where public transport is not available, must be sanitised properly. The surroundings near exam centres, exam halls, toilets must be sanitised properly. Social distancing must be maintained in the exam hall and mask must be provided to all students," he said.

The minister also said that since the students have been asked to arrive at exam centre at 7:30 in the morning, a small biscuit packet must be provided to each student so that they don't feel hungry during the exam and till they return home after the exam.

"Thermal scanning of every student should be done before allowing inside the exam hall. In case there is fever those students must be made to write exam in separate room. Separate exam halls must be arranged for students in quarantine areas and if it's not feasible they must be allowed to write exam in September. District administrations must disseminate information about precautionary measures taken to build confidence among parents," the minister said.

Sudhakar instructed the officials to work in coordination with the Education Department and other departments.

Stating that there are 458 containment zones in Bengaluru, the minister asked the officials to be extra cautious in these areas and make arrangements to ensure health department staff can take students to the nearest health center if anybody is found ill during the exam.

Education Minister Suresh Kumar, Additional Chief Secretary Javed Akhtar, Education Secretary, Secretary of Medical Education Department, BBMP officials, Health Experts and others were present.