{
 "composite": "danger",
 "method": "Composite danger = expected DALYs (disability-adjusted life-years) lost per 100,000 standard trips, SUMMED across causes. Additive because independent causes' expected harms add. Non-linear because each cause is converted to DALYs by its real severity (a traveller death ~ 40 life-years; a diarrhoea episode ~ 0.0008), so rare-lethal and common-mild risks are comparable in true-harm terms. An ordering of expected harm, NOT a probability.",
 "standard_trip_days": 14,
 "life_years_lost_per_death": 40,
 "x_home_reference": "AU",
 "causes": {
  "roads": {
   "rate_basis": "WHO road deaths per 100k resident-yr",
   "annual": true,
   "exposure_mult": 1.3,
   "daly_per_event": 40,
   "note": "deaths only (non-fatal road injury omitted, understates); tourists on unfamiliar roads/scooters -> mult>1"
  },
  "homicide": {
   "rate_basis": "UNODC homicide per 100k resident-yr",
   "annual": true,
   "exposure_mult": 0.3,
   "daly_per_event": 40,
   "note": "tourists far less exposed than residents (domestic/gang) -> mult<1"
  },
  "malaria": {
   "rate_basis": "WHO incidence per 1,000 at-risk-yr (x100 -> per 100k)",
   "annual": true,
   "exposure_mult": 1.0,
   "daly_per_event": 0.42,
   "note": "CASES; daly ~= 1% traveller CFR x 40 + 0.02 illness; assumes NO prophylaxis (prophylaxis cuts ~10x), non-endemic = 0"
  },
  "foodwater": {
   "rate_basis": "travellers'-diarrhoea attack rate PER TRIP by sanitation band",
   "annual": false,
   "attack_by_band": {
    "1": 0.08,
    "2": 0.2,
    "3": 0.4,
    "4": 0.55
   },
   "daly_per_event": 0.0008,
   "note": "a few sick days, rarely serious; categorical from basic-sanitation access"
  }
 },
 "bands": {
  "thresholds_daly_per_100k_trips": [
   15,
   40,
   100
  ],
  "meaning": "band 1 <15, 2 15-40, 3 40-100, 4 >=100"
 },
 "caveat": "Assumptions are deliberately explicit and editable here. Road/homicide are mortality-only; malaria assumes no prophylaxis; food-water is morbidity. Change any parameter and recompute with compute.danger."
}