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Prof Malavige predicts dengue will get worse with climate change unless…

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By Rathindra Kuruwita

The impact of dengue will probably get worse due to climate change, Professor Neelika Malavige of the Department of Immunology and Molecular Medicine, University of Sri Jayewardenepura and Head of Dengue Global Programme and Scientific Affairs, Drugs for Neglected Diseases Initiative (DNDi) has said recently at a conference organized by DNDi in Thailand.

The conference was held in parallel to the 20th International Congress for Tropical Medicine and Malaria (ICTMM). DNDi is a non-profit drug research and development (R&D) organization that is developing new treatments for neglected diseases like dengue.

Professor Malavige said that as the world got warmer, dengue would spread to Europe and North America. She added that dengue fever had become increasingly common in recent decades worldwide with around 390 million infections occurring each year. Climate change had been identified by WHO and other national, and international health authorities as one of the primary causes of the global spread of dengue fever and other Aedes aegypti-transmitted viral infections, she said.

“The weather has an impact on vector-borne illnesses. Rainfall and ambient temperature are referred to as macro factors that influence dengue since they directly impact Aedes aegypti population density,” Prof. Malavige said.

The population density of Aedes aegypti declines when the average temperature is lower.

“The larval development time, larval and adult survival, and duration of the gonotrophic cycle of the dengue vector are directly affected by climatic factors such as ambient temperatures, rainfall, and relative humidity. Vectors are increasing due to increasing temperature. As temperature increases the mosquitoes mature faster, giving them more time to spread the disease,” she said.

On the other hand, increasing population, lifestyle changes and uncontrolled urbanization are also reasons for the rapid global spatial spread of dengue, she said.

“Risk factors like obesity, and diabetes are also increasing among the people. Those with these diseases are more likely to suffer from more serious forms of dengue.”

Doctors and medical administrators in countries with dengue were efficient in managing the disease and this explains why the mortality is lower. However, when there was an overload of cases, the system monitoring and evaluating dengue patients for severity suffers because keeping an eye on each patients becomes an impossibility, Professor Malavige said. “There is a shift in the age of those who get infected. Earlier it was a disease that children got. Now you can find patients from all age groups,” she said.

Commenting on attempts to develop a vaccine for dengue, most recently by Takeda Pharmaceutical Company, Professor Malavige said that the data available looked promising. The vaccine could be soon registered in Latin America and Asia. The current data shows that it reduces hospitalization by about 80%. This is similar to the effectiveness of COVID vaccine, although long term safety data for a dengue vaccine is needed for all serotypes. However, it is unfortunate that there is not yet a designated treatment for dengue.

“Dengue is a disease of the low income countries. Infection of the developing world. Each year hundreds of millions of people are affected by dengue but there is still no treatment for it. Would we have a vaccine so fast if COVID too was a disease of the low income countries? The amount of research done on COVID for the last two years is immense. Not even 10% of the research volume has been directed for dengue. There are not enough funds for dengue research. Global North has done some research but the researchers are far away from the disease. The perspective will be different if they too had to live with dengue,” she said.

Dr. Isabela Ribeiro, Viral Diseases Cluster Director, DNDi said that countries of the Global South must cooperate with each other to find a cure for dengue. There are a number of pharmaceutical powerhouses in the Global South and they can work together to find a cure, she said.

“The World Health Organization’s (WHO) report on neglected tropical diseases, ‘A road map for neglected tropical diseases 2021–2030’ does not mention a treatment for dengue. Their focus is on vaccines and vector control,” she said.

Meanwhile, Jean-Michel Piedagnel, South-East Asia Director, DNDi said that while taking steps to prevent dengue, from vector control to using mosquito repellant was important, it should not be allowed to mask the fact that there was no treatment.

“There is no treatment because there is not enough funding. We must not forget that. Each year hundreds of millions are affected by dengue. They deserve treatment,” he said.



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No changes to IMF agreement despite Cyclone Ditwah impact

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The International Monetary Fund (IMF) has declared that the Extended Fund Facility (EFF) wouldn’t be amended in view of the impact of Cyclone Ditwah.

The IMF delegation, at the end of its visit to Sri Lanka, informed President Anura Kumara Dissanayake of its decision during a meeting at the Presidential Secretariat yesterday (28). The IMF delegation included Director of the Asia and Pacific Department Krishna Srinivasan, Deputy Director for Asia and the Pacific Sanjaya Panth, Mission Chief Evan Papageorgiou, and Resident Representative Martha Woldemichael.

The 48-month arrangement, approved on 20 March, 2023, during Ranil Wickremesinghe’s tenure as the President, is for SDR 2.286 billion (approximately US$3 billion). In terms of the agreement, repayment of debt has to be resumed in 2028. Sri Lanka unilaterally suspended debt repayment in April 2022.

Close on the heels of Cyclone Ditwah, the main Opposition party, the Samagi Jana Balawegaya (SJB), repeatedly pressed the government to request the IMF to amend the agreement.

The Presidential Media Division ( PMD) quoted the IMF delegation as having said that the strong fiscal discipline maintained by the government over the past year had been a key factor in addressing the challenges caused by Cyclone Ditwah. They said that the government’s ability to present a supplementary estimate of Rs. 500 billion was made possible by a surplus in the Treasury.

The Government of Sri Lanka was represented by Minister of Labour and Deputy Minister of Economic Development Dr. Anil Jayantha Fernando, Secretary to the Ministry of Finance Dr. Harshana Suriyapperuma, Governor of the Central Bank Dr. Nandalal Weerasinghe, Senior Economic Adviser to the President Duminda Hulangamuwa, along with several others.

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IMF lauds Sri Lanka’s economic turnaround, highlights regional resilience

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Sri Lanka’s economy has “stabilised decisively” under its International Monetary Fund (IMF)-supported programme, with growth rebounding, tax revenues doubling, and inflation sharply declining, a senior IMF official said in Colombo yesterday.

Dr. Krishna Srinivasan, Director of the IMF’s Asia and Pacific Department, delivered the assessment during a public lecture on the IMF Regional Economic Outlook: Asia and Pacific, held at the Central Bank of Sri Lanka. He was joined by Dr. Thomas Helbling, the Department’s Country Director.

Both officials commended the Asia-Pacific (APAC) region’s overall economic resilience in the face of global challenges and advocated for deeper trade and supply chain integration to mitigate vulnerabilities in international trade.

Presenting a country-focused analysis, Dr. Srinivasan outlined how Sri Lanka has performed against the five key pillars of the IMF programme:

Revenue-based fiscal consolidation, supported by tax reforms and strengthened social safety nets.

Restoring debt sustainability through fiscal adjustment and debt restructuring.

Maintaining price stability and rebuilding foreign exchange reserves.

Safeguarding external stability.

Combating corruption via a comprehensive anti-corruption reform agenda.

“Sri Lanka has come out of the crisis stabilising its economy across three dimensions,” Dr. Srinivasan stated referring to Sri Lanka’s Growth, Revenue, and Inflation. He highlighted that growth “bounced back decisively,” turning positive within six months of the programme and recently averaging about 5 percent annually.

On fiscal performance, he noted a “significant turnaround.” Tax revenue has doubled from a critically low 7.3 percent of GDP to 14.8 percent in 2025.

Dr. Krishna Srinivasan / Dr. Thomas Helbling

Furthermore, inflation has dropped “in a very convincing manner” from approximately 70 percent to the current 2-3 percent range. “One would hope that in the next few quarters, it will reach the Central Bank’s target of 5 percent,” he added.

“Overall, the IMF programme for Sri Lanka has delivered on many of its objectives,” Dr. Srinivasan concluded. “There is still a long way to go in terms of securing strong, sustained, balanced growth, but the program is off to a very good start. All of you, the authorities, and the people of Sri Lanka need to be congratulated for the progress made so far,” he said.

In his regional remarks, Dr. Srinivasan projected that Artificial Intelligence (AI) will be a key driver of the Asian economy. He suggested that technology companies in the region would be “better served by the capital markets than from conventional banks,” pointing to a need for evolved financial ecosystems to support innovation.

The lecture underscored the IMF’s constructive outlook for Asia’s continued resilience, while emphasising structural reforms and regional cooperation as vital for future stability and growth.

By Sanath Nanayakkare

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ICT, WNPS unite to protect sea turtles along Colombo coast

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Jan Zhang, Chief Executive Officer of CICT, and Mr. Graham Marshall, President of the WNPS, exchange signed copies of the agreement, formalizing a three-year partnership for sea turtle conservation and coastal ecosystem protection.

Colombo International Container Terminals (CICT) has entered into a three-year partnership (2025–2028) with the Wildlife and Nature Protection Society (WNPS) under the Turtle and Coastal Health United Programme (TACHUP) to protect sea turtles and restore coastal ecosystems along the Colombo Port City–Mount Lavinia coastline.

Sri Lanka is home to five of the world’s seven sea turtle species, all of which nest along this highly urbanised stretch of coastline. The initiative will focus on safeguarding turtle nesting and hatchling success, restoring coastal vegetation, strengthening citizen science and data collection, and engaging local communities, schools, and volunteers in long-term conservation efforts.

The project builds on ongoing conservation work that has already recorded more than 680 turtle visits in a single nesting season and protected over 15,900 eggs with hatching success rates exceeding 80 per cent.

Commenting on the partnership, CICT CEO Jan Zhang said, “As a gateway to global trade, CICT recognises its responsibility to protect the environment that surrounds us. This partnership with WNPS is an investment in long-term ecological resilience, biodiversity conservation, and responsible stewardship of Sri Lanka’s coastal heritage.”

The collaboration enhances Colombo’s global standing as an accredited Ramsar Wetland City and reflects CICT’s continued commitment to sustainability, environmental protection, and responsible port operations.

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