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| A mosquito sucking blood from a human host |
Dengue fever also
known as breakbone fever, is an infectious tropical
disease caused by the dengue virus carried
and transmitted by several species of mosquito within the genus Aedes, principally A. aegypti. Symptoms include
fever, headache, muscle and joint pains, and a characteristic skin
rash that is similar to measles. In a small proportion of cases the
disease develops into the life-threatening dengue hemorrhagic fever, resulting
in bleeding, low levels of blood platelets and blood plasma
leakage, or into dengue shock syndrome, where dangerously low blood
pressure occurs.
Epidemiology
Most people with dengue recover without any ongoing problems. The mortality is 1–5% without treatment, and less than 1% with adequate treatment; however severe disease carries a mortality of 26%. Dengue is endemic in more than 110 countries. It infects 50 to 390 million people worldwide a year, leading to half a million hospitalizations, and approximately 25,000 deaths.
Epidemiology
Most people with dengue recover without any ongoing problems. The mortality is 1–5% without treatment, and less than 1% with adequate treatment; however severe disease carries a mortality of 26%. Dengue is endemic in more than 110 countries. It infects 50 to 390 million people worldwide a year, leading to half a million hospitalizations, and approximately 25,000 deaths.
In the Philippines, dengue is reported as a leading cause of childhood hospitalizations. By September 2011, the disease had already resulted in 285 deaths of children between 1 and 9 years of age. Fatalities for the 1–9 years-of-age cohort accounted for nearly 60% of deaths due to dengue in 2011, which highlights the importance of early vaccination for young children in endemic regions when a vaccine becomes available.
Prevention
There are no approved vaccines for the dengue virus. Prevention thus depends on control of and protection from the bites of the mosquito that transmits it.
The World Health Organization recommends an Integrated Vector Control program consisting of five elements: (1) Advocacy, social mobilization and legislation to ensure that public health bodies and communities are strengthened, (2) collaboration between the health and other sectors (public and private), (3) an integrated approach to disease control to maximize use of resources, (4) evidence-based decision making to ensure any interventions are targeted appropriately and (5) capacity-building to ensure an adequate response to the local situation.
The primary method of controlling A. aegypti is by eliminating its habitats. This is done by emptying containers of water or by adding insecticides or biological control agents to these areas, although spraying with organophosphate or pyrethroid insecticides is not thought to be effective. Reducing open collections of water through environmental modification is the preferred method of control, given the concerns of negative health effect from insecticides and greater logistical difficulties with control agents. People can prevent mosquito bites by wearing clothing that fully covers the skin, using mosquito netting while resting, and/or the application of insect repellent (DEET being the most effective).
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| Dengue prevention activities |
The DOST Mosquito Ovicidal/Larvicidal (OL) Trap System
The Department of Science and Technology (DOST) through its Industrial Technology Development Institute (ITDI) developed the mosquito ovicidal/larvicidal trap (OL trap) which aims to control the population of the dengue-carrying Aedes mosquitoes. It was introduced in 2011.
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| The DOST OL Trap System |
The primary component of
this OL trap is the solution made from natural active agent which is safe to
humans but lethal to mosquitoes. After careful study and research and field
testing of the OL trap in Quezon City and Marikina City, DOST partnered with
the Department of Health (DOH) in its nationwide launching. The project targets
50,000 households nationwide, majority of the recipients are in National
Capital Region (NCR) with 5,000 households and other regions with 2,800
households. DOST provided 200,000 OL trap kits, as well as OL pellets good for
6 months and conducted trainings to DOST and DOH staff. On the other hand, DOH
was responsible in identifying sites with high dengue cases and in facilitating
and coordinating with Local Government Units (LGU) and health centers for
recipients of mosquito OL trap kits.
Effective pilot testing
Based on pilot testing in select barangays (villages) nationwide, the OL trap has been shown to be effective in curbing the population of the Aedes aegypti mosquito whose adult females carry the deadly dengue virus. Dengue has claimed at least 193 lives from Jan. 1 to June 8 this year, with at least 42,207 stricken by the virus during the period. Two years since its launch, the effective yet simple contraption against mosquitoes has been made available commercially.
Description
The OL trap kit simply consists of a black cup and a popsicle stick-like strip of lawanit (coconut husk wall paneling) that is half-immersed in an organic solution that can destroy mosquito eggs and larvae. When the kit is placed in areas known to be frequented by mosquitoes, the scent of the solution attracts female Aedes aegypti mosquitoes to lay their eggs on the lawanit stick. While the trap does not kill the mosquito, it kills the hundreds of eggs it lays. The trap’s crucial component is the pepper-based solution developed by leading Filipino entomologists and DOST scientists. It has three important parts: a black container, a small strip of lawanit measuring 1"x6.5" for mosquitoes to lay their eggs on, and pellets as larvicide. The OL-Trap's ovicidal and larvicidal effect prevent the next generation of mosquitoes from reaching adulthood, thus curbin the Aedes mosquito population.
How the OL trap works?
The idea is to attract Aedes mosquitos particularly to lay their eggs on the lawanit paddle. The trap creates optimum conditions for this species to lay its eggs: stagnant, clean, clear water, dark area and damp rough surface. The eggs will either be trapped in the lawanit paddle or find its way into organic larvicide solution, where they are killed before transforming into adults.
Advantages
The developed ovi/larvicidal trap system is effective in attracting Aedes mosquitoes and at the same time lethal to hatched larvae. It is safe, cheap and make-use of natural active agent. The process is simple and can control the population of Aedes mosquitos.
Houses should have OL traps
Almanzor said a packet of the specially formulated pellets costs about P4 each. A packet is good for about one week’s use before it has to be replaced. The DOST has advised that each house should have at least four traps, two placed inside the house and two placed outside. Almanzor said they hoped that the OL trap pellets would eventually be made available even in sari-sari stores. She said they needed to find more interested parties who would invest in the equipment needed to mass-produce the pellets. “We are very much willing to transfer the technology,” she said. The DOST also pointed out that the OL trap was only one way to prevent the spread of dengue, as the primary preventive measure still involves keeping one’s surroundings clean and destroying mosquito breeding sites such as uncovered containers that collect clear, stagnant water. Scientists are still working to improve the OL trap and find better ovicide and larvicide solutions.
Distributor of OL traps
You may contact Heritage Veterinary Corporation (HVC), authorized manufacturing and distributor of DOST Mosquito OL Trap at Tel. No. 641-0833 or email them at herivet_co@yahoo.com.ph.
Foreign interest
The ingenious ovicidal/larvicidal (OL) trap devised by Filipino scientists has attracted the interest of two other nations fighting the scourge of the mosquito-borne dengue hemorrhagic fever.
An official of the Department of Science and Technology (DOST) said Pakistan and Nepal had formally communicated their interest to adopt the device to curb the transmission of dengue from mosquitoes. “Pakistan and Nepal have written, asking for a transfer of technology but we have intellectual property rights to settle. We also want to apply this in our country first,” said Dr. Nuna Almanzor, director of the DOST Industrial Technology and Development Institute.
See the OL trap video HERE.
Source:
DengueMatters
DOST-Region 1
Inquirer
ITDI-DOST
OLTrap Blogspot
Effective pilot testing
Based on pilot testing in select barangays (villages) nationwide, the OL trap has been shown to be effective in curbing the population of the Aedes aegypti mosquito whose adult females carry the deadly dengue virus. Dengue has claimed at least 193 lives from Jan. 1 to June 8 this year, with at least 42,207 stricken by the virus during the period. Two years since its launch, the effective yet simple contraption against mosquitoes has been made available commercially.
Description
The OL trap kit simply consists of a black cup and a popsicle stick-like strip of lawanit (coconut husk wall paneling) that is half-immersed in an organic solution that can destroy mosquito eggs and larvae. When the kit is placed in areas known to be frequented by mosquitoes, the scent of the solution attracts female Aedes aegypti mosquitoes to lay their eggs on the lawanit stick. While the trap does not kill the mosquito, it kills the hundreds of eggs it lays. The trap’s crucial component is the pepper-based solution developed by leading Filipino entomologists and DOST scientists. It has three important parts: a black container, a small strip of lawanit measuring 1"x6.5" for mosquitoes to lay their eggs on, and pellets as larvicide. The OL-Trap's ovicidal and larvicidal effect prevent the next generation of mosquitoes from reaching adulthood, thus curbin the Aedes mosquito population.
How the OL trap works?
The idea is to attract Aedes mosquitos particularly to lay their eggs on the lawanit paddle. The trap creates optimum conditions for this species to lay its eggs: stagnant, clean, clear water, dark area and damp rough surface. The eggs will either be trapped in the lawanit paddle or find its way into organic larvicide solution, where they are killed before transforming into adults.
Advantages
The developed ovi/larvicidal trap system is effective in attracting Aedes mosquitoes and at the same time lethal to hatched larvae. It is safe, cheap and make-use of natural active agent. The process is simple and can control the population of Aedes mosquitos.
Houses should have OL traps
Almanzor said a packet of the specially formulated pellets costs about P4 each. A packet is good for about one week’s use before it has to be replaced. The DOST has advised that each house should have at least four traps, two placed inside the house and two placed outside. Almanzor said they hoped that the OL trap pellets would eventually be made available even in sari-sari stores. She said they needed to find more interested parties who would invest in the equipment needed to mass-produce the pellets. “We are very much willing to transfer the technology,” she said. The DOST also pointed out that the OL trap was only one way to prevent the spread of dengue, as the primary preventive measure still involves keeping one’s surroundings clean and destroying mosquito breeding sites such as uncovered containers that collect clear, stagnant water. Scientists are still working to improve the OL trap and find better ovicide and larvicide solutions.
Distributor of OL traps
You may contact Heritage Veterinary Corporation (HVC), authorized manufacturing and distributor of DOST Mosquito OL Trap at Tel. No. 641-0833 or email them at herivet_co@yahoo.com.ph.
Foreign interest
The ingenious ovicidal/larvicidal (OL) trap devised by Filipino scientists has attracted the interest of two other nations fighting the scourge of the mosquito-borne dengue hemorrhagic fever.
An official of the Department of Science and Technology (DOST) said Pakistan and Nepal had formally communicated their interest to adopt the device to curb the transmission of dengue from mosquitoes. “Pakistan and Nepal have written, asking for a transfer of technology but we have intellectual property rights to settle. We also want to apply this in our country first,” said Dr. Nuna Almanzor, director of the DOST Industrial Technology and Development Institute.
See the OL trap video HERE.
Source:
DengueMatters
DOST-Region 1
Inquirer
ITDI-DOST
OLTrap Blogspot
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ReplyDeleteHi! If that Auto Safety Pad is a Filipino invention, please make an article about it so that we can feature it here. Please send it to filipinominds@gmail.com. A 5-6 paragraph article will do. Please include its important features, inventor, history of the invention, cost, materials, and other relevant details . Thank you.
DeleteHi very good post, Musquitos are very deadly they spread numerous disease, there should be a good mosquito controlling devices to control it.
ReplyDeleteYes. We are definitely waiting for the article so we could feature it in Tangkilik-n-Atin FB group. Thanks.
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ReplyDelete