In Mangaluru Rajnath hits out at Pakistan

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.

Madikeri, Apr 22: The quality of water in the River Cauvery in Kodagu district has improved significantly following the nationwide Lockdown.

The discharge of effluents from home stays and resorts situated on the banks of the river in the district has stopped due to lack of visitors. The discharge of waste water had made the river impure all these years.

The suspension of boat ride in Dubare has reduced the pollution from diesel motorboats in the river. For the last few years, the water quality of the river had reached 'C' category from 'B' category during the summer.

Bengaluru, Jul 3: The Karnataka government is allowing select asymptomatic and mildly symptomatic Covid-19 patients to recuperate at home as part of home isolation guidelines, an official said on Friday.

"Only those who are asymptomatic or mildly symptomatic shall be allowed to be in isolation at home," said a health official, highlighting that such patients should be properly oriented on home isolation.

However, before home isolation, a health team will visit the patient's house and assess its suitability for executing home isolation.

Similarly, the patient should be provided with a tele-consultation link for initial triage, daily follow up and during the entire home isolation time.

For a daily update, the patient isolated at home should give a report on his health status to the physician or health authorities.

"The home isolation shall be with the knowledge of the family members, neighbours, treating physician and local health authorities," said the official.

Though home isolation is allowed, it is not a blanket permission for all asymptomatic and mildly symptomatic cases in Karnataka to avail.

"Such cases should have the requisite facility at their residence for self-isolation and also for quarantining the family contacts. A care giver should be available to provide care on 24x7 basis," said the official.

Likewise, the caregiver should also have a regular communication link between him and the hospital during the home isolation.

No patient above 50 years will be allowed to avail home isolation.

"If the patient has the following comorbidities: hypertension, diabetes, obesity, thyroid disease, they shall be well managed and under good clinical control as assessed by medical officer," he said.

However, patients with comorbidities such as kidney diseases, dialysis, heart diseases, stroke, tuberculosis, cancer and HIV cannot avail home isolation.

Likewise, immunity compromised patients and those on steroids also cannot be on home isolation.

Though pregnant women are not allowed to avail this facility, lactating women are allowed after due instruction and assessment.

The Health Department has also issued several other guidelines and protocols for a patient choosing home isolation.