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Bengaluru, Jun 4: All shops, offices, malls, commercial establishments and others in Karnataka must not allow Covid-stamped people to enter their premises before the completion of the prescribed quarantine time, said a top official on Wednesday.

"They should not allow those with quarantine stamp to enter before the end of their quarantine period or till they get current Covid negative test report," ordered Chief Secretary T.M. Vijay Bhaskar.

Bhaskar has also issued the order to all religious places, hotels and others to first check for quarantine stamp on all their customers or visitors before they enter the premises.

"All shops, commercial establishments, offices, factories, malls, religious places, hotels and etc.. are required to check for quarantine stamp on all their customers or visitors before they enter the premises," he said.

In the event of a violation, Bhaskar said the police should be informed at 100.

He issued the same order to the general public and resident welfare associations asking them to be vigilant.

"General public and resident welfare associations are advised to report any violation of the quarantine in their neighbourhood to the police at telephone number 100," said the chief secretary.

The orders came under the head aRole of general public, resident welfare associations and commercial establishments''.

General public, commercial establishments and resident welfare associations have been empowered to report quarantine violations at a time when many activities are set to reopen from June 8 as part of Unlock - 1, after more than two months of lockdown.

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, Mar 25 : Karnataka recorded its highest single-day tally to date, as 10 people tested positive, taking the total number of cases to 51 in the state.

“Till date 51 COVID-19 positive cases have been confirmed in the state which includes one death and three discharged," the health department said in a statement on Wednesday.

The rise in cases adding to the growing national tally of people who have tested positive for COVID-19.

The daughter of a former union minister from the Bharatiya Janata Party (BJP) from Karnataka has also tested positive.

Bengaluru accounts for 32 of the total 51 cases recorded in the state so far,including three who have fully recovered and released.

Dakshina Kannada has five confirmed cases, Chikkaballapura and Kalaburagi has three cases each, Mysuru has and Uttara Kannada has two cases each and four other districts have one case each.

Prime Minister Narendra Modi has announced a 21-day lockdown of the country to keep people indoors and contain the spread of the virus in the community.

The government has also been trying to scale up testing.

Medical education minister K.Sudhakar on Wednesday told Mint that Karnataka will scale up testing by 10-fold with the help of government and private labs approved by the Indian Council of Medical Research (ICMR).

A total of 2,438 people have been tested in Karnataka and 2242 have tested negative, according to state health department. 214 people are lodged in medical hospitals.