Dengue warning signs
Six signs; any one means seek care now, and skip ibuprofen and aspirin until dengue is ruled out.
GRADE C · WHO 2025-05FIELD STATION LOGBOOK · EST. 2026
You have seven days before the water in your yard starts biting.
Egg to adult in warm standing water, within a hundred meters of the bite. Empty it inside the window and there is nothing to spray. Run the dip log
DEVELOPMENT AT 25-28°C WATER · AEDES AEGYPTIEMPTY, SCRUB, TIP ON ANY DAY IN THE WINDOW BREAKS THE CYCLE · Twelve-stop walkthrough
FIELD EVIDENCE 001 · OVITRAP, WEEK 34
The ten-minute dip log
ONE ROW PER CONTAINERWalk your ground with a flashlight. Anything holding water eight days is a nursery. Log it, act on it, re-check after rain.
| SITE | FOUND | LARVAE | ACTION |
|---|---|---|---|
| Saucer under plant pot | 2026-09-02 | YES | SCRUB WEEKLY |
| Bucket by the shed | 2026-09-02 | no | TIP & STORE DRY |
| Roof gutter, west run | 2026-09-02 | YES | FLUSH |
| Bird bath | 2026-09-02 | no | REFRESH EVERY 5 DAYS |
| Folded tarp, side yard | - | ? | SHAKE OUT |
Method mirrors CDC container-surveillance protocol. Development data: WHO dengue guidelines (2009) ch. 2. Full citations on the method page
Numbers that rarely make the yard walk
Global burden sits in annual agency reports. The standing water in a saucer is the same chain, one address closer.
597,000
Malaria deaths in 2023. About 76% were children under five; 95% were in the WHO African Region.
14.4 million
Dengue cases reported to WHO in 2024, from 112 countries, the highest year on record. Brazil alone passed ten million.
1,808
West Nile cases in the United States in 2024, 173 deaths, three-quarters neuroinvasive. Texas reported 456.
100 m
Adult Aedes rarely leave the hundred metres around where they hatch. The neighbour's pond is seldom why your evening is unusable; an overlooked saucer is.
Malaria: WHO World Malaria Report 2024 (data year 2023). Dengue: WHO Weekly Epidemiological Record 2025, no. 52. West Nile: CDC MMWR US arboviral summary, 2024. Range: CDC Aedes aegypti profile. Checked 2026-09. How we grade
Mosquito-borne diseases, one page each
Symptoms, incubation, care thresholds and travel notes, every claim graded and dated. All diseases
DISEASES
REPELLENTS
Repellent actives compared
DEET, picaridin, IR3535 and oil of lemon eucalyptus by concentration, hours and age floor.
GRADE C · EPA/CDCWALK
The twelve-stop walkthrough
One image per stop: what you see, the move, the clock. The ranked checklist lives on the yard page.
GRADE B · FIELD TRIALSTRAPS
Do traps actually work?
Lethal ovitraps cut adult counts in trials; no consumer device has yet shown fewer human infections.
GRADE B · VCAG REVIEWMETHOD
How we grade evidence
A systematic review, B field trial, C institutional position, D cage-only evidence.
THIS SITE'S CONSTITUTIONHISTORY
The domain's first life
2009-2013 hosted lethal-ovitrap trial pages, cited by WHO regional offices.
ARCHIVE RECORDTHE QUESTION PEOPLE ACTUALLY TYPE
Why is my yard so full of mosquitoes? Almost always one overlooked container. Aedes stay near where they hatch: walk your own ground first, not the neighbor's pond.
CDC Aedes biology profile, checked 2026-09
597,000MALARIA DEATHS IN 2023, MOSTLY CHILDREN UNDER FIVE
14.4 MDENGUE CASES REPORTED IN 2024, THE HIGHEST YEAR ON RECORD
1,808WEST NILE CASES IN THE US IN 2024: NOT A TROPICS-ONLY DISEASE
100 mAEDES RANGE: THE BITE USUALLY HATCHED IN YOUR OWN YARD