Hot weather theory falls flat, coronavirus more potent in India post-summer

Agencies
July 5, 2020

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.

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News Network
January 23,2026

Mangaluru: The Karnataka Government Polytechnic (KPT), Mangaluru, has achieved autonomous status from the All India Council for Technical Education (AICTE), becoming the first government polytechnic in the country to receive such recognition in its 78-year history. The status was granted by AICTE, New Delhi, and subsequently approved by the Karnataka Board of Technical Education in October last year.

Officials said the autonomy was conferred a few months ago. Until recently, AICTE extended autonomous status only to engineering colleges, excluding diploma institutions. However, with a renewed national focus on skill development, several government polytechnics across India have now been granted autonomy.

KPT, the second-largest polytechnic in Karnataka, was established in 1946 with four branches and has since expanded to offer eight diploma programmes, including computer science and polymer technology. The institution is spread across a 19-acre campus.

Ravindra M Keni, the first dean of the institution, told The Times of India that AICTE had proposed autonomous status for polytechnic institutions that are over 25 years old. “Many colleges applied. In the first round, 100 institutions were shortlisted, which was further narrowed down to 15 in the second round. We have already completed one semester after becoming an autonomous institution,” he said. He added that nearly 500 students are admitted annually across eight three-year diploma courses.

Explaining the factors that helped KPT secure autonomy, Keni said the institution has consistently recorded 100 per cent admissions and placements for its graduates. He also noted its strong performance in sports, with the college emerging champions for 12 consecutive years, along with active student participation in NCC and NSS activities.

Autonomous status allows KPT to design industry-oriented curricula, conduct examinations, prepare question papers, and manage academic documentation independently. The institution can also directly collaborate with industries and receive priority funding from AICTE or the Ministry of Education. While academic autonomy has been granted, financial control will continue to rest with the state government.

“There will be separate committees for examinations, question paper setting, boards of studies, and boards of examiners. The institution will now have the freedom to conduct admissions without government notifications and issue its own marks cards,” Keni said, adding that new academic initiatives would be planned after a year of functioning under the autonomous framework.

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News Network
February 3,2026

Bengaluru: Following reports of fresh Nipah virus (NiV) cases in West Bengal and heightened vigilance across parts of Southeast Asia, the Karnataka Health Department has placed the state on high alert and activated emergency preparedness protocols.

Health officials said enhanced surveillance measures have been initiated after two healthcare workers in Barasat, West Bengal, tested positive for the virus earlier this month. While no cases have been reported in Karnataka so far, authorities said the state’s past exposure to Nipah outbreaks and high inter-state mobility warranted preventive action.

Officials have directed district health teams to intensify monitoring, particularly at hospitals and points of entry, and to ensure early detection and isolation of suspected cases.

High Mortality Virus with Multiple Transmission Routes

Nipah virus is a zoonotic disease that can spread from animals to humans and has a reported fatality rate ranging between 60 and 75 per cent. Fruit bats, also known as flying foxes, are the natural reservoirs of the virus and can transmit it by contaminating food sources with saliva or urine.

Known modes of transmission include:

•    Contaminated food: Consumption of fruits partially eaten by bats or raw date-palm sap
•    Animal contact: Exposure to infected pigs or other animals
•    Human-to-human transmission: Close contact with body fluids of infected persons, particularly in healthcare settings

Symptoms and Disease Progression

The incubation period typically ranges from 4 to 14 days, though delayed onset has also been reported. Early symptoms often resemble common viral infections, making prompt clinical suspicion critical.

•    Initial symptoms: Fever, headache, body aches, fatigue, sore throat
•    Progressive symptoms: Drowsiness, disorientation, altered mental state
•    Severe stage: Seizures, neck stiffness and acute encephalitis, which can rapidly progress to coma

Public Health Advisory

The Health Department has issued precautionary guidelines urging the public to adopt risk-avoidance practices to prevent any local spillover.

Do’s
•    Wash fruits thoroughly before consumption
•    Drink boiled and cooled water
•    Use protective equipment while handling livestock
•    Maintain strict hand hygiene

Don’ts
•    Avoid fruits found on the ground or showing bite marks
•    Do not consume beverages made from raw tree sap, including toddy
•    Avoid areas with dense bat populations
•    Do not handle sick or dead animals

Preparedness Measures

Officials confirmed that isolation wards are being readied in major government hospitals and that medical staff are being sensitised to identify early warning signs.

“There is no cause for panic, but there is a need for heightened vigilance,” a senior health official said, adding that there is currently no approved vaccine or specific antiviral treatment for Nipah, and care remains largely supportive.

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coastaldigest.com news network
February 5,2026

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Mangaluru: The KSRTC Mangaluru division has rolled back the fare hike on buses operating on the Mangaluru–Kasaragod route following the suspension of toll collection at the Arikkady toll plaza near Kumbala in Kasaragod district.

The fare revision had been implemented after the National Highways Authority of India (NHAI) began toll collection at the Arikkady plaza on NH-66. As a result, fares for ordinary and Rajahamsa services were increased by ₹7 and ₹10, respectively, raising the bus fare from Mangaluru to Kasaragod from ₹81 to ₹88.

Senior Divisional Controller of KSRTC’s Mangaluru division, Rajesh Shetty, said the fares were reduced after toll collection at the Arikkady plaza was stopped. “The tollgate began operations on January 13, and the toll amount was deducted from the FASTag accounts of KSRTC buses operating on the route. Following an order from the central government to suspend toll collection, KSRTC has also withdrawn the additional fare with immediate effect,” he said.

At present, vehicles travelling on the Mangaluru–Kasaragod route pay toll only at the Talapady toll plaza. The toll for light motor vehicles (LMVs) at Talapady is ₹80 for a same-day return, while heavy vehicles, including buses, are charged ₹250. At Arikkady, the toll rates were ₹130 for LMVs (same-day return) and ₹450 for buses.

Protests against Arikkady toll plaza

The Arikkady toll plaza witnessed widespread protests from January 12, the day toll collection commenced. On the second day, an action committee led by Manjeshwar MLA A K M Ashraf launched an indefinite protest at the site. Except for the BJP, leaders and workers of most major political parties participated in the agitation.

On the night of January 14, a large number of protesters gathered at the plaza and vandalised property, following which authorities temporarily suspended toll operations. The BJP later also expressed opposition to the toll plaza and criticised NHAI’s decision. 

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