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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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CTU: Teacher shortage casts doubt on govt.’s education reforms

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By Chaminda Silva

The government’s ambitious plans to overhaul Sri Lanka’s school education system and introduce new curricula could face serious implementation difficulties, with teacher unions warning that a longstanding and severe shortage of teachers remains unresolved.

The warning came as Prime Minister Dr. Harini Amarasuriya announced yesterday that new curricula would be introduced for Grades 2 and 6 next year, while also stating that the government planned to recruit around 30,000 new teachers across the education system by February.

However, the Ceylon Teachers’ Union (CTU) questioned whether the government would be able to provide the teachers required to implement the proposed reforms, claiming that the recruitment process itself had become mired in problems.

CTU General Secretary Joseph Stalin accused the government of making misleading claims about teacher recruitment and said the shortage that had affected schools for more than a year would continue into next year.

“There is currently a severe teacher shortage in the school system,” Stalin told a press conference in Colombo yesterday.

He said the government had previously acknowledged that there were about 46,000 teacher vacancies in the school system, but the figure was later revised to around 36,000.

“Those vacancies have remained unfilled for more than a year and a half. The school system has continued to operate with a severe teacher shortage throughout this period,” he said.

Stalin questioned how the government intended to introduce new curricula while thousands of existing teaching vacancies remained unfilled.

He said the Government had initially announced plans to recruit 23,000 teachers, despite the number of vacancies being significantly higher.

Although a gazette notification, relating to the recruitment had been issued, only around 17,000 applicants had been summoned for the initial round of interviews, he added.

Stalin said interviews were expected to begin in November and that appointments would, therefore, be made only from January onwards.

“If there are more than 36,000 teacher vacancies, the Government has decided to recruit only 23,000 teachers, and only around 17,000 have been called for interviews.

Who will take responsibility for the remaining vacancies?” he asked.

He said the problem was not merely one of numbers but also involved the Government’s recruitment procedure.

According to Stalin, shortcomings and ambiguities in the gazette notification issued for the recruitment examination had contributed to the present crisis.

“We primarily believe that the lack of proper procedures in the gazette notification issued for the recruitment examinations has contributed to this crisis. The ambiguities in the notification itself have led to the recruitment process becoming a major issue,” he said.

The shortage was also affecting the transfer system, Stalin mentioned.

A large number of teachers had been unable to obtain transfers because replacements were not available, with some teachers remaining at the same school for 12 or 13 years, he claimed.

As replacements had not been recruited, such teachers would have to remain at their present schools for another year, he said.

“This is a serious crisis. However, the situation is even more critical for students who are left without teachers,” Stalin said.

He also questioned the Government’s plans to close schools with fewer than 50 students.

“We suspect that this move is to take the teachers from these schools and redeploy them to other schools to fill vacancies there.”

The union’s concerns come at a time when the Government is pushing ahead with a major overhaul of the education system.

Addressing the Badulla District Women’s Conference yesterday, Prime Minister Amarasuriya said the Government would introduce new curricula for Grades 2 and 6 next year as part of its wider education reforms.

She said a new curriculum had already been introduced for Grade 1 this year, while new curricula for Grades 2 and 6 would be introduced over the next two years.

The Prime Minister said the Government was developing a new education system aimed at securing the future of all children, with the emphasis shifting away from producing students, focused solely on examinations.

The Government’s objective was to nurture a generation capable of facing future challenges successfully and confidently, she said.

The Prime Minister also announced that interviews for the recruitment of 17,000 teachers would commence on November 20.

She said approval had also been granted to recruit 2,000 academic staff members for the university system, with that recruitment process already under way.

The Government plans to recruit approximately 30,000 new teachers across the education system by February next year, she said.

A special programme would also be implemented to improve infrastructure facilities in schools, the Prime Minister added.

The contrasting positions highlight a potentially significant gap between the Government’s education reform timetable and the capacity of the existing school system to deliver it.

While the Government has set out a timetable for introducing new curricula and recruiting tens of thousands of teachers, the CTU argues that the existing shortage, delays in recruitment and unresolved transfer problems could leave schools struggling to provide adequate teaching staff when the reforms take effect.

With the Government planning to introduce another round of curriculum changes next year, the ability to fill vacancies in time could, therefore, become a crucial test of whether its broader education reform programme can be implemented as planned.

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Norochcholai to remain offline for several days after blackout

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The Norochcholai coal power plant will remain disconnected from the national grid for several days following Saturday’s countrywide power failure, as authorities continue to follow safety procedures after the incident.

The National System Operator (NSO) said the 810-megawatt plant had been shut down as a precaution after the sudden power outage on October 17 and would not be reconnected to the grid until the necessary safety measures were completed.

The temporary loss of 810 MW of generating capacity would be managed through careful electricity supply arrangements to minimise the impact on consumers over the coming days, the NSO said.

It said the prevailing rainy weather was expected to help sustain hydropower generation at high levels, while a projected decline in electricity demand would further ease pressure on the system.

The countrywide blackout occurred at around 11.43 a.m. on October 17 after a generating unit disconnected from the national grid, creating an imbalance that caused the entire power system to collapse within less than 30 seconds.

Restoration efforts began shortly afterwards. By 12.11 p.m., major hydropower generating units had been brought back online and the power system was restarted simultaneously in four separate sections.

The restoration process was complicated by small-scale power generation facilities that were not under the direct control of the system control centre. However, electricity supplies were progressively restored through the activation of distribution feeders from 12.37 p.m.

By around 3 p.m., power had been restored to essential services, including major hospitals, water treatment plants and the airport.

Grid substations across the country had been reconnected by around 5 p.m., restoring electricity to the majority of consumers, the NSO said.

The operator stressed that the sudden disconnection of a generating unit as a safety measure was a normal occurrence at power plants. However, such a disconnection resulting in a complete collapse of the national power system was not considered normal.

An internal investigation has, therefore, been launched to establish the sequence of events that led to the islandwide outage and determine its underlying causes, the NSO said.

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President links businessman held with arms to politicians

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By Norman Palihawadane

President Anura Kumara Dissanayake yesterday said a businessman, arrested with a caches of firearms, ammunition and hand grenades, had links to a politician, as authorities continued investigations into the seizure.

Addressing a public gathering in Badulla, the President said the suspect was among those being investigated in connection with operations targeting organised crime and that authorities were aware of his political connections.

He also referred to a video footage allegedly showing the suspect firing at people in the Weliweriya area, describing it as an example of the dangerous activities associated with individuals possessing illegal firearms.

The 38-year-old businessman, who is reportedly the owner of a cinema, and a relative of a politician, was arrested following a search conducted by officers of the Colombo District Crime Division at the cinema on Hanwella Road, in the Kirindiwela Police Division, on October 17.

Police said the search had been carried out based on information received by investigators.

The weapons and ammunition seized included two foreign-made pistols, a revolver, a foreign-made repeater firearm and a foreign-made 12-bore firearm.

Police also recovered hundreds of rounds of ammunition, including 398 rounds of 12-bore ammunition, 278 rounds of 9mm ammunition, 49 rounds of .32-calibre ammunition and 3,083 rounds of .22-calibre ammunition, along with two live hand grenades.

The suspect, a resident of the Millathe area, is being questioned as investigations continue.

The Police Media Division said police would seek a detention order to facilitate further questioning of the suspect and advance the investigation.

The Colombo District Crime Division is conducting further investigations into the cache of weapons and the suspect’s alleged activities and connections.

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