Dost doh dep ed ol trap program

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Dost doh dep ed ol trap program

  1. 1. Desiree R. Jaleco, RN School Nurse IISagay National High School
  2. 2. Objective • General  Providethe scientific framework of the OL Trap Program of Dengue vector controlQUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 2
  3. 3. Dengue Fever • Definition  Also known as breakbone Fever  An infectious tropical disease caused by the Dengue VirusQUITO OL-TRAP  Mosquito-borne viral disease  Caused by one of four serotypes of flaviviruses 22 July 2012 DOST-DOH Dep ED O/L Trap Program 3
  4. 4. Four Strains of Serotypes Viruses • DENV – I • DENV – II • DENV – IIIQUITO OL-TRAP • DENV - IV All four types can cause full spectrum of disease. 22 July 2012 DOST-DOH Dep ED O/L Trap Program 4
  5. 5. Classification (WHO) • DENGUE FEVER • DENGUE HEMORRHAGIC FEVER  GRADE 1 – presence of bruises  GRADE 2 – presence of spontaneous bleeding  GRADE 3 & 4 – referred as dengue shockQUITO OL-TRAP syndrome 22 July 2012 DOST-DOH Dep ED O/L Trap Program 5
  6. 6. Signs and Symptoms • Dengue Fever  Fever  Headache  Muscle and joint painsQUITO OL-TRAP  Skin rashes 22 July 2012 DOST-DOH Dep ED O/L Trap Program 6
  7. 7. DENGUE HEMORRHAGIC FEVERQUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 7
  8. 8. DENGUE SHOCK SYNDROMEQUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 8
  9. 9. QUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 9
  10. 10. Management • No specific treatment • Only symptomatic and supportive treatment  Paracetamol (Acetaminophen)  Oral Rehydration  IV fluidsQUITO OL-TRAP  Blood Transfusion (packed RBC or Whole Blood)  Discontinue IV fluids during recovery phase to prevent fluid overload 22 July 2012 DOST-DOH Dep ED O/L Trap Program 10
  11. 11. The VectorQUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 11
  12. 12. Vector Biology Aedes aegypti Aedes albopictus - primary vector - secondary vector - involve in cases of - maintains the virus in the General characteristics epidemics environment - urbanized areas - rural areas - lives indoors - lives outdoorsQUITO OL-TRAP - confined to artificial - prefers to breed outdoor, Breeding habitat containers indoors in natural containers - rests in cool, dark corners - rests outdoors in Resting habits of the house clearings and vegetations 22 July 2012 DOST-DOH Dep ED O/L Trap Program 12
  13. 13. Morphology Aedes aegypti Aedes albopictus Size - 3-4 mm - same Color - dark brown to black - same - lyre-shaped white Thorax marks or scales - single white marksQUITO OL-TRAP - with white and dark Abdomen - with white scales marks Legs - with white marks - same 22 July 2012 DOST-DOH Dep ED O/L Trap Program 13
  14. 14. Vector Characteristics • Biting Habits  “daybiters” with two peaks of biting time:  1 to 2 hours after sunrise  1 to 2 hours before sunset  only female mosquitoes bite because of the requirement of blood for ovipositionQUITO OL-TRAP  males do not bite but feed on plant juices and nectar of flowers  man is the preferred host but in his absence, lower vertebrates serve as substitute 22 July 2012 DOST-DOH Dep ED O/L Trap Program 14
  15. 15. Vector Characteristics • Flying Habit  do not fly great distances  farthest flight distance is within 200 to 400 meters radius from their breeding places • Adults found around 50 meters from theQUITO OL-TRAP breeding sources 22 July 2012 DOST-DOH Dep ED O/L Trap Program 15
  16. 16. Bionomics • at temperatures <10oC and >40oC, no developmental process takes place • females mates with male only once • Blood meal takes place afterQUITO OL-TRAP 48 hours from emergence and after mating for egg production 22 July 2012 DOST-DOH Dep ED O/L Trap Program 16
  17. 17. Bionomics • oviposition takes place about 2 to 5 days from blood engorgement • prefers dark-colored background for ovipositionQUITO OL-TRAP • lays egg 3 to 4 times in its lifetime  60 to 100 eggs per batch • Survival potential: 20-30 days 22 July 2012 DOST-DOH Dep ED O/L Trap Program 17
  18. 18. Life Cycle (10-12 days) Eggs: - Black and oval in Adult shape -Maxillary pulps shorter - Laid singly above than probosis water surfaces of -Wings uniformly grayish containers - Without float black - Viability: 6 months to -Body and legs are black 1 year due to the with distinctive white presence of chorion patches throughout -Thorax has markingsQUITO OL-TRAP 2 - 3 days 1 - 2 days Larva: Pupa - Feeding stage 6 - 8 days - Breeds in clean and -Non-feeding stage -Breeding trumpet is non-polluted water long, slender with - Short and stout siphon narrow opening with one pair of hair tuft - Rests at an angle to the water surface 22 July 2012 DOST-DOH Dep ED O/L Trap Program 18
  19. 19. DOST-DOH Dep ED OL Trap Ovicidal/Larvicidal Trap • a method used to control the reproductive capacity of dengue carrying mosquitoesQUITO OL-TRAP • A project of DOST-DOH using a natural/organic larvicide solution 22 July 2012 DOST-DOH Dep ED O/L Trap Program 19
  20. 20. Usage of OL Trap • Larvicide solution emits odor that attracts female Aedes mosquitoes for oviposition • The lawanit paddle submerge in solution through capillary action serves as theQUITO OL-TRAP breeding place • The larvicide solution kills the eggs and larva 22 July 2012 DOST-DOH Dep ED O/L Trap Program 20
  21. 21. Servicing the OL Trap • OVITRAPS are installed and serviced every six days in locations where transmission of dengue is probable  nursery schools  pre-schoolsQUITO OL-TRAP  elementary schools  Hospitals  community with confirmed dengue cases  Ovitrap Index = > 10% 22 July 2012 DOST-DOH Dep ED O/L Trap Program 21
  22. 22. Setting the OL Trap • Step 1  Fill the plastic tumbler with tap water up to the lined mark just above the DOST logo (~250 ml)QUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 22
  23. 23. Setting the OL Trap • Step 2  Pour one pack OL pellets into the plastic cup  Stir thoroughly to ensure pellets areQUITO OL-TRAP dissolved 22 July 2012 DOST-DOH Dep ED O/L Trap Program 23
  24. 24. Setting the OL Trap • Step 3  Placethe lawanit stick in the solution with the rough surface facing upQUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 24
  25. 25. Setting the OL Trap • Step 4  Place 1 cup each inside and outside the classroom in a low-lying and dark area  If outside, protect from directQUITO OL-TRAP sunlight and rainfall  Take care not to spill the contents  Keep out of reach of children and animals 22 July 2012 DOST-DOH Dep ED O/L Trap Program 25
  26. 26. Setting the OL Trap • Step 5  Collect trap and note for the following on the sixth day  Eggs on the paddle  Live larva/pupaQUITO OL-TRAP  The presence of even one larvae indicates a positive trap  Recordin the OL Trap Monitoring Sheet (3 copies) 22 July 2012 DOST-DOH Dep ED O/L Trap Program 26
  27. 27. Setting the OL Trap • Step 6  Repeat steps 1-5 every 6 days  Set the traps every Wednesday  Collect traps every Tuesday  Finalize report every TuesdayQUITO OL-TRAP  Submit a copy of the report to city dengue coordinators every Wednesday Note: If collection period falls on a holiday, please collect traps a day before 22 July 2012 DOST-DOH Dep ED O/L Trap Program 27
  28. 28. Cleaning the Trap • Vigorously brush-off into the solution eggs stuck into the lawanit creases • Kill the larva/eggs by pouring hot water intoQUITO OL-TRAP the black tumbler • Dispose contents properly by pouring contents on dry ground 22 July 2012 DOST-DOH Dep ED O/L Trap Program 28
  29. 29. Ovitrap Index Total Number of positive traps X 100% Total Number of traps plantedQUITO OL-TRAP If OI is >10%, the place is vulnerable to dengue transmission. 22 July 2012 DOST-DOH Dep ED O/L Trap Program 29
  30. 30. Remember: • A positive trap means there is at least one mosquito laying its eggs in the sampling site (surveillance site)QUITO OL-TRAP • Aim is eliminate this one mosquito laying its eggs 22 July 2012 DOST-DOH Dep ED O/L Trap Program 30
  31. 31. THANK YOU!QUITO OL-TRAP 22 July 2012 DOST-DOH Dep ED O/L Trap Program 31

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