Stage set for Saudi Arabia to bring menace of dengue under control

The arrival of infections from dengue-prone countries in Asia remains a concern for Saudi Arabia’s health authorities. (AFP)
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Updated 26 March 2022
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Stage set for Saudi Arabia to bring menace of dengue under control

  • Mosquito-borne illness is prevalent in the western region, most notably in Jeddah and Makkah
  • Development of effective vaccines key to controlling dengue in countries where it is endemic

JEDDAH: While the world has been preoccupied with fighting the COVID-19 pandemic for the past two years, other life-threatening viruses and diseases have continued to spread.

One of them is dengue, a mosquito-borne virus that causes an illness that in its most extreme form can be fatal. According to experts, urgent action is needed to bring it under control.

Dengue is mostly found in tropical and subtropical regions, and millions of cases of infection are reported worldwide each year. It is most common in Southeast Asia, the Western Pacific, Latin America and Africa but it has been spreading to other regions, cropping up in localized outbreaks in Europe and southern parts of the US.

Transmitted to humans by a number of species of female mosquitoes, dengue has an incubation period of between four and 10 days. Once infected, the patient becomes the primary carrier and can transmit the disease for an average of five days. A mosquito can infect several people during its peak feeding hours of early morning and before dusk.

The result can be severe flu-like symptoms, including a high fever, severe headache, muscle and joint pain, nausea and vomiting, that can last for seven days.

Most cases are mild but those who recover from dengue and are reinfected can suffer much more severe symptoms, including internal bleeding and organ damage. Women who contract the virus during pregnancy run the risk of passing it on to their babies.

Dengue has been present in Saudi Arabia for more than two decades and is endemic during the rainy season, between April and September. It is particularly prevalent in the western region, most notably in Jeddah and Makkah.

The emergence of dengue in the Kingdom can be traced back to 1993-94 when an isolated case was first detected in Jeddah. Years of surveillance, epidemiological tracking, prevention and control measures have helped lower the proliferation of the mosquitoes that spread the virus but it nevertheless remains a significant challenge for health authorities.

Even before the COVID-19 pandemic, several countries, mainly in tropical and subtropical zones, were reeling from the effects of mosquito-borne diseases such as malaria, dengue, yellow fever, West Nile virus and Zika.

Measures designed to curb the spread of such diseases had been making progress globally. But within months of the coronavirus outbreak, medical personnel were redeployed to help slow the spread of COVID-19. This resulted in a resurgence of other diseases in areas where they had been under control.

Dengue accounts for nearly 70 percent of the disease burden in Asia, its spread fueled in part by rapid urbanization in recent years. With the recent resumption of international commercial flights as pandemic travel restrictions were lifted, the disease is once again traveling around the globe.

Saudi Arabia is one of the world’s biggest hubs for religious tourism, and authorities in the country consider efforts to bring dengue under control to be of paramount importance.

In 2019, the Kingdom was among the countries that recorded some of the highest rates of the disease. In 2018 alone, 6,345 dengue cases were confirmed, mostly in Jeddah.

Despite the challenges posed by the COVID-19 pandemic, studies show there was a steep reduction in dengue cases in Saudi Arabia over the past two years, attributed to a collaborative effort by government agencies involved in vector surveillance and control. In public health, vectors are the living organisms that transmit diseases between humans or from animals to humans.




More research is needed to overcome the annual dengue epidemic in Saudi Arabi, said Abdullah Algaissi. (Supplied)

“Though dengue is still endemic in some cities and countries around the world, in Makkah, for example, dengue is reported at low levels as a result of several measures that have been taken to decrease its mode of transmission,” Dr. Osamah Barasheed, deputy chief public health officer at Makkah Health Cluster, told Arab News.

“Health education in homes and public areas by the Ministry of Health to increase awareness about dengue played an important role in preventing its spread.”

Municipal authorities in Makkah have also been working to reduce numbers of mosquitoes through sanitation campaigns and the disinfection of sites where they commonly breed.

Studies indicate the spread of dengue in Saudi Arabia has been fueled by several factors, including poor sanitation in some urban districts and the arrival of migrant workers and religious pilgrims from dengue-prone areas of the Middle East, North Africa and Asia.

“Dengue is still under control,” said Barasheed. “Health-education departments in vector-borne and zoonotic diseases (infectious diseases transmitted from animals to humans) administrations at (the Ministry of Health) play a major role in fighting and reducing the spread of dengue cases by their awareness activities in the community.”

SYMPTOMS OF DENGUE

• High fever of 104 F

• Headaches

• Muscle, bone or joint pain

• Nausea

• Vomiting

• Pain behind the eyes

• Swollen glands

• Rash

Dr. Abdullah Algaissi, a virologist and assistant professor at Jazan University, told Arab News that dengue research in the Kingdom currently focuses on three key areas: understanding of the immune response to dengue infection; the severity of the disease; and control measures and the development of safe and effective vaccines and antivirals.

Saudi universities are prioritizing the issue and considerable efforts are being made to develop a vaccine.

“There are several vaccine candidates currently under development,” said Algaissi. “Dengvaxia is one vaccine that has been approved in some countries but only for certain groups. DENVax is developed by a Japanese pharmaceutical company, Takeda.

“Both vaccines are intended to protect against all four serotypes (distinct variations within a species of bacteria or virus) but there are still some issues.”




Surveillance and prevention are key to curbing the spread of the potentially fatal illness. (AFP)

Research has found that DENVax mainly provides protection against one form of dengue and is less effective against the other three.

Dengvaxia, meanwhile, benefits patients who have previously been infected with the virus. However, a problem with it is that it can cause more severe symptoms in those who have not previously been infected, throwing its efficacy into doubt.

This is related to a phenomenon known as antibody-dependent enhancement of infection, which means that the antibody generated in response to a first infection by one dengue serotype can lead to more severe disease after a subsequent infection with another serotype.

“Dengvaxia is not recommended for individuals who have not been infected with dengue in the past,” said Algaissi. “Some countries have stopped using it because of this, while others approved it only for use in people who were infected and who live in areas where this infection is endemic.”

The US Food and Drug Administration in 2020 approved the use of the vaccine for children between the ages of 9 and 16 who live in areas where the disease is endemic and who have had a previous dengue infection that was confirmed by lab tests.

In addition to vaccine development, another area of dengue research is genetic modification. Luke Alphey from the Department of Zoology at the University of Oxford in the UK has developed a technique that hinders the ability of mosquitoes to reproduce. Mosquitoes are produced in the lab that carry a lethal gene. Once released into the wild, they mate with wild species and transfer the deadly gene, which prevents the larva maturing to adulthood.

Clearly, continuing research into the virus and the development of better vaccines hold the key to controlling and, eventually, eliminating dengue from Saudi Arabia.

“Most of the research currently focuses on surveillance and control of the mosquitoes and the virus and the clinical characteristics of the dengue patients,” said Algaissi. “But I hope to see more research on developing effective vaccines and antivirals.”


Kingdom assumes presidency of Arab League science, education body

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Kingdom assumes presidency of Arab League science, education body

  • Saudi Arabia pledges regional cooperation, backs Palestinian cause and cultural heritage

JEDDAH: Saudi Arabia has assumed the presidency of the Executive Council of the Arab League Educational, Cultural and Scientific Organization until 2026.

The official announcement was made on Friday during the 27th session of the ALECSO, which was held in Jeddah under the presidency of Saudi Arabia. During the session, Iraq handed over the presidency to the Kingdom.

In a speech delivered on behalf of Minister of Culture Prince Badr bin Abdullah bin Farhan, Minister of Education and Chairman of the Saudi National Committee for Education, Culture and Science Yousef Al-Benyan welcomed the ministers and heads of national committees for education and science participating in the session.

Al-Benyan stressed the Kingdom’s humanitarian and fraternal support for the Gaza Strip within the framework of Arab cooperation and solidarity.

He affirmed Saudi Arabia’s support for Khalid Anan, the only Egyptian and Arab candidate for the position of director-general of the organization.

Al-Benyan concluded the speech by praising the efforts of Arab countries in supporting ALECSO, and building bridges of communication to achieve common regional goals.

Saudi Deputy Minister of Education Mohammed Al-Sudairi confirmed that holding the ALECSO meetings in Jeddah coincides with an increase in the role of Saudi national institutions to support the work of the organization.

He added that the number of Saudi initiatives exceeded 45, reflecting Saudi Arabia’s interest and belief in the importance of working with international organizations and its regional environment.

Iraqi Minister of Education Ibrahim Al-Jabouri, head of the 26th session, pointed out achievements made in the previous session, and various programs aimed at building bridges of cooperation between Arab culture and the rest of the world.

Director General of ALECSO Mohammed Ould Omar thanked King Salman and Crown Prince Mohammed bin Salman for hosting the event in Jeddah.

He presented the most prominent programs, initiatives, and projects implemented by the organization between the 26th and 27th sessions with international organizations, such as UNESCO, the work of the Arab Summit in Algeria, the Francophone Summit, the 13th Conference of Arab Ministers of Education in Rabat, and the International Conference on Adult Education, also held in Morocco.

At the end of the 27th session, ministers and heads of the Arab delegations agreed on the importance of supporting the Palestinian cause, condemning and denouncing the displacement that the Palestinian people, as well as the destruction of Palestinian antiquities.

They also addressed the importance of supporting culture, education, innovation, and science in the Arab world. 


Pakistan praises Saudi Arabia over facilitating Hajj for its nationals

Updated 18 May 2024
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Pakistan praises Saudi Arabia over facilitating Hajj for its nationals

  • Pakistani pilgrims have been arriving in Madinah since May 9 when pre-Hajj flight operations were launched
  • Pakistani minister is currently visiting Madinah to oversee Hajj arrangements for his nationals

RIYADH: Pakistani Minister of Religious Affairs and Interfaith Harmony Chaudhry Salik Hussain expressed his appreciation to Saudi Arabia for the exceptional services and facilities provided to Pakistani pilgrims who will be taking part in Hajj this year.

Minister Hussain’s remarks came in a statement delivered in Madinah, where he is currently visiting to oversee Hajj arrangements for Pakistani pilgrims, the Saudi Press Agency reported.

Pakistan has a Hajj quota of 179,210 pilgrims this year, of whom 63,805 will perform the pilgrimage under the government scheme while the rest will use private tour operators. This year’s Hajj is expected to run from June 14-19.

Pakistani pilgrims have been arriving in Madinah since May 9 when pre-Hajj flight operations were launched. Over 20,000 Pakistani pilgrims have so far arrived in Madinah under the government scheme.

The Pakistani official particularly praised the Saudi leadership for launching the Makkah Route Initiative at Karachi International Airport, mirroring the program already established at Islamabad International Airport.

Hussain said he was confident the initiative would be extended to Lahore Airport in the coming year.


KSrelief continues aid projects in Sudan, Yemen and Greece

Updated 18 May 2024
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KSrelief continues aid projects in Sudan, Yemen and Greece

  • 26 neurosurgeries were done in Sudan
  • 330 relief trucks delivered 5,752 tonnes of aid to Yemen

RIYADH: The Kingdom’s aid agency KSrelief continued its projects in Sudan, Yemen, and Greece.

In Sudan, KSrelief implemented a medical volunteer project for neurosurgery and spine surgery from May 12 to May 17.

About 15 volunteer specialists from various medical fields assisted in performing 26 surgeries, the Saudi Press Agency reported. 

In Yemen, KSrelief provided a convoy of 330 relief trucks, which delivered over 5,752 tonnes of critical supplies to people across 14 Yemeni governorates.  

The aid included food, medical supplies, and shelter materials. 

Additionally, KSrelief donated 10 tonnes of dates to Greece, which were presented by Saudi Ambassador to Greece Saad Al-Ammar to Athens.


How forest conservation is helping Saudi Arabia achieve its green objectives

Updated 18 May 2024
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How forest conservation is helping Saudi Arabia achieve its green objectives

  • By planting trees and protecting forests, the Kingdom promotes biodiversity and sustainable development
  • Forests provide habitats for hundreds of animal species and play a pivotal role in combating climate change 

JEDDAH: With its low annual rainfall, much of Saudi Arabia’s vast landscape is covered by desert, broken by occasional oases. In its mountainous regions, valleys, and along its coastline, however, the Kingdom is home to multiple forest ecosystems.

Forests play a pivotal role in combating climate change by acting as carbon sinks — storing carbon both above and below ground, thereby extracting it from the atmosphere, where it would otherwise contribute to the greenhouse effect.

Their significance in climate change adaptation and mitigation is also underscored by their role in creating local microclimates, providing habitats for a wealth of biodiversity, locking in freshwater resources, and preventing flash floods, landslides, and soil degradation.

Riyadh residents take part in a tree-planting project as part of the Greener Home initiative. (@Riyadh_Green/File)

Saudi Arabia’s National Center for Vegetation Cover Development and Combating Desertification is at the forefront of implementing the Kingdom’s strategic goals outlined in Vision 2030.

“Forests play a crucial role in mitigating climate change,” Samir Malaika, assistant director-general of the general administration of forests at NCVC told Arab News. “Saudi Arabia’s dry climate and geography hinder its efforts to conserve forests and promote plant growth.

“With most areas receiving minimal rainfall, forests struggle to thrive. The escalating impact of climate change exacerbates environmental stressors, hampering forest growth and regeneration efforts.”

The NCVC aims to elevate living standards by reducing pollution and facilitating the restoration of degraded environments. It is also committed to building resilience against natural hazards and defenses against harmful pests that could pose risks to vegetation.

Simultaneously, it prioritizes the sustainable development of the Kingdom’s natural resources. With seven ongoing initiatives, it aims to ensure the responsible and lasting utilization of resources in line with the nation’s sustainability objectives.

Among the center’s key initiatives under the Saudi Green Initiative is a scheme to plant some 10 billion trees — representing a significant step in the Kingdom’s reforestation effort.

The initiative for forest management and sustainable development by 2030 underscores a long-term commitment to nurturing and preserving woodland environments.

The phased approach to preserving and restoring vegetation in pasture areas reflects a strategic focus on addressing the specific ecological challenges faced by different ecosystems.

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Furthermore, the initiative for developing vegetation and infrastructure for 50 national parks highlights the importance of creating protected natural spaces while promoting biodiversity and ecotourism.

Moreover, the initiative to plant 7 million wild trees in royal reserves demonstrates a targeted effort to enhance the natural habitats within these pristine areas.

Engagement by the public and private sectors in vegetation development and combating desertification underscores the collaborative approach needed in order to achieve sustainable environmental goals.

One initiative of the National Center for Vegetation Cover Development and Combating Desertification with the aim of achieving sustainable forest management is to tap local community participation in agroforestry projects and by promotingecotourism. (Photo Courtesy: NCVC)

By harnessing the collective resources and expertise of various stakeholders, these initiatives aim to create a resilient and thriving ecosystem that benefits both present and future generations.

According to Malaika, Saudi Arabia boasts a forest coverage spanning approximately 2,768,050 hectares, primarily concentrated in the southern and southwestern regions, along riverbeds, and on the coastlines of the Red Sea and the Arabian Gulf.

These forest ecosystems are categorized into three primary types: mountain, valley, and mangrove.

Mountain forests

Mountain forests are predominantly located in the region spanning the Hijaz Mountains in Taif to Jazan in the south. These areas have neutral soil acidity and receive the highest rainfall and humidity levels, particularly evident in the southwest with denser forest cover.

The juniper tree has proudly stood as a symbol of picturesque beauty in Al-Baha region, adorning its slopes and mountain peaks with vibrant green hues. (SPA)

Forests are made up of several Juniperus plant species, typically found at altitudes of 2,000 meters and above. Additionally, Olea chrysophylla forests, characterized by wild olive trees with golden leaves, thrive at altitudes of 1,500 to 2,000 meters.

At lower altitudes, between 1,000 to 1,500 meters, Acacia plant species dominate the landscape.

Notably, terraced agriculture is a common feature of mountainous regions, facilitating crop fruit tree cultivation while aiding in water retention and soil protection. However, improper management can lead to land degradation, adversely affecting the surrounding forests.

DID YOUKNOW?

• Saudi Arabia is home to more than 63 unique ecosystems, ranging from mountainous regions to coastal lowlands.

• The Kingdom boasts a diverse array of wildlife, including 78 terrestrial mammal species and 499 species of bird.

• Coral reefs in Saudi Arabian waters host an impressive 266 species, contributing to marine biodiversity.

• With more than 6,500 species, Saudi Arabia’s invertebrate population testifies to the richness of its ecosystems.

• Saudi Arabia boasts three distinct forest ecosystems: mountain forest, valley forest, and mangrove forest.

Valley forests

Saudi Arabia’s topography features 179 valleys distributed across the country. Valley forests, mainly situated in semi-arid regions, are characterized by species such as Acacia ehrenbergiana, Acacia tortilis, Maerua crassifolia, several species of Commiphora, and Salvadora persica.

Additionally, oases and valleys are abundant with various Acacia species, Ziziphus spina-christi, Salvadora persica, Haloxylon persicum, trees, shrubs, and Hyphaene thebaica. 

Saudi Arabia’s topography features 179 valleys distributed across the country. (AN file photo)

Mangrove forests

Mangroves and coastal ecosystems tolerant to saltwater are predominantly located along the Red Sea coast, with other stretches found along the Arabian Gulf coast.

Despite the lack of comprehensive forest data, studies indicate significant degradation of the mangrove ecosystem.

Avicennia marina is the most prevalent species in mangrove forests, with Rhizophora mucronata being less common.

Besides these natural forests, the Kingdom is also host to many urban and cultivated woodlands in its parks and residential neighborhoods, planted to provide shade, reduce temperatures, and beautify city streets.

Despite the Kingdom’s diverse ecosystems, it faces significant challenges in preserving and expanding its forests, including limited resources, poor local management, insufficient nursery production to meet seedling demand, a lack of awareness about dumping and unauthorized grazing, and other irresponsible human activities.

The Saudi National Center for Wildlife is working to protect, develop, and restore ecosystems and biodiversity around the Kingdom, in addition to addressing risks related to plant and animal life.

Red Sea Global implemented a nursery project with the goal to have 50 million trees of Mangroves by 2030. (Red Sea Global photo/File)

According to Abdulmanea Al-Qahtani, invertebrates department director at the NCW, the Kingdom has 63 distinct ecosystems, encompassing a diverse range of landscapes, including mountains, plains, deserts, valleys, forests, seas, wetlands, plateaus, coastal areas, and marshes, all teeming with biodiversity.

The Kingdom is home to 78 species of terrestrial mammal, 499 species of bird, 136 species of reptile, seven species of amphibian, and more than 6,500 species of invertebrate.

In its waters, the Kingdom also offers habitats to 19 species of marine mammal, eight species of freshwater fish, 1,248 species of saltwater fish, and 266 species of coral

Unknown to many, Saudi Arabia is home to 78 species of terrestrial mammal, 499 species of bird, 136 species of reptile, seven species of amphibian, and more than 6,500 species of invertebrate. (NCW collage image)

The Saudi Green Initiative, launched by Crown Prince Mohammed bin Salman in 2021 under the Vision 2030 framework, aims to tackle threats to this rich biodiversity and foster sustainable development.

Key goals include transitioning to a sustainable economy by reducing carbon emissions, boosting renewable energy production, and bolstering conservation efforts.

Additionally, the initiative aims to enhance environmental protection, promote green technologies, and create green jobs to drive economic diversification and growth.
 

 


Saudi fund signs two loan agreements, inaugurates Hulhumale Island development in Maldives

Updated 17 May 2024
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Saudi fund signs two loan agreements, inaugurates Hulhumale Island development in Maldives

  • Al-Marshad participated in the partial inauguration of the Hulhulmale Island Development Project

MALE: CEO of the Saudi Fund for Development Sultan bin Abdulrahman Al-Marshad signed on Friday two development loan agreements with the Maldives’ Minister of Finance Dr. Mohammed Shafiq. These agreements will contribute to financing the Velana International Airport development project with a value of $100 million and the healthcare sector development project in the Maldives with a value of $50 million, provided by fund.

Additionally, Al-Marshad participated in the partial inauguration of the Hulhulmale Island Development Project, which the SFD is contributing to financing through a soft development loan worth $80 million. The event was also attended by Saudi Ambassador to the Maldives Matrek bin Abdullah Al-Ajalin.