{
  "slug": "snake-bite-fatal",
  "question": "What are the odds of being killed by a venomous snake?",
  "category": "animal",
  "no_reliable_estimate": false,
  "perceived": {
    "description": "Snakes are a textbook example of a prepared fear — ophidiophobia is one of the most commonly reported specific phobias in the general population, and the imagery of a venomous bite is culturally ancient. But \"fear of snakes\" as measured in surveys bundles the phobia with garden-variety squeamishness, and no rigorous recent poll isolates \"fear of being killed by a venomous snake bite\" from that broader bucket. The perceived side here is marked intuition rather than survey.\n",
    "rough_estimate": "most people guess something like 1 in a few thousand",
    "kind": "intuition"
  },
  "native": {
    "display": "~5 venomous snake bite deaths per year (US)",
    "numerator": 5,
    "denominator": 260000000,
    "unit": "per year",
    "population": "US adults"
  },
  "normalized": {
    "lifetime_us_adult": 0.00000113,
    "display": "1 in ~880,000 lifetime (US adult)",
    "log_value": -5.95,
    "assumptions": "Uses ~5 venomous snake bite deaths per year in the United States (CDC NIOSH) across a US adult population of ~260 million, giving an annual per capita risk of ~1.9e-8. Compounded over 59 years of remaining adult life. The Greene et al. (2021) 30-year average of ~3.4 fatal bites per year is slightly lower and sits inside the uncertainty band.\n",
    "uncertainty": {
      "low": 7e-7,
      "high": 0.0000018
    },
    "scope": "us_adult_lifetime"
  },
  "sources": [
    {
      "url": "https://www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html",
      "title": "Venomous Snakes at Work",
      "publisher": "US Centers for Disease Control and Prevention (NIOSH)",
      "source_type": "govt_report",
      "statistic": "7,000-8,000 venomous snake bites per year in the US; about 5 deaths",
      "excerpt": "\"Each year, 7,000-8,000 people are bitten by venomous snakes in the United States. About 5 of those people die. The number of deaths would be much higher if people did not seek medical care.\"\n",
      "source_date": "2024-05-01",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260413183905/https://www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html",
      "calculation_notes": "CDC NIOSH gives the round-number US figure of ~5 deaths per year. Dividing by a US adult population of ~260M gives ~1.9e-8 per adult per year; compounded over 59 years of remaining adult life yields the normalized lifetime figure of roughly 1 in 880,000.\n",
      "independence_note": "CDC NIOSH occupational-safety summary consolidates multiple US public-health data streams (WONDER, AAPCC NPDS, CDC surveillance). Partially overlaps with the upstream sources used by Greene et al., so is not fully independent of the peer-reviewed figure below.\n"
    },
    {
      "url": "https://pubmed.ncbi.nlm.nih.gov/33046301/",
      "title": "Epidemiology of fatal snakebites in the United States 1989-2018",
      "publisher": "American Journal of Emergency Medicine (Greene, Folt, Wyatt, Brandehoff)",
      "source_type": "peer_reviewed",
      "statistic": "101 fatal native-snake bites in the US over 1989-2018 (~3.4 per year); 90.2% rattlesnakes",
      "excerpt": "\"We identified 101 fatal bites from native snakes... Rattlesnakes accounted for 74 (90.2%) of the 82 deaths for which the species was known or which occurred where rattlesnakes are the only native crotalids. There were five fatalities attributed to copperheads, two due to cottonmouths, and one caused by an eastern coral snake.\"\n",
      "source_date": "2021-07-01",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260505063844/https://pubmed.ncbi.nlm.nih.gov/33046301/",
      "calculation_notes": "Greene et al.'s 30-year average (~3.4 deaths/year) is the peer-reviewed lower bound and corroborates the CDC figure. Using this figure instead of 5 would shift the lifetime estimate to ~1 in 1.3M. The uncertainty band spans both.\n",
      "independence_note": "CDC NIOSH and Greene et al. draw from overlapping but not identical case pools (NIOSH summarizes multiple public-health sources; Greene et al. use AAPCC NPDS plus CDC WONDER death certificates), so this counts as meaningful independent corroboration.\n"
    },
    {
      "url": "https://www.who.int/news-room/fact-sheets/detail/snakebite-envenoming",
      "title": "Snakebite envenoming — Fact sheet",
      "publisher": "World Health Organization",
      "source_type": "reputable_reference",
      "statistic": "Global snakebite deaths: 81,410-137,880 per year",
      "excerpt": "\"Around 81 410 to 137 880 people die each year because of snake bites, and around three times as many amputations and other permanent disabilities are caused by snakebites annually.\"\n",
      "source_date": "2023-09-13",
      "source_accessed": "2026-04-11",
      "archive_url": "http://web.archive.org/web/20260409193332/https://www.who.int/news-room/fact-sheets/detail/snakebite-envenoming",
      "calculation_notes": "Included as context for the global asymmetry: snakebite is a major neglected tropical disease globally, but the US-specific fatality rate is roughly four orders of magnitude lower per capita than the South Asian and sub-Saharan African rates that drive the global total. We normalize on the US figure, not this one.\n",
      "independence_note": "WHO figure derives primarily from Kasturiratne et al. (2008) and subsequent country-level verbal autopsy studies; independent of the US-centric CDC and AAPCC data.\n"
    }
  ],
  "comparison_anchors": [
    {
      "label": "Death by shark attack (lifetime, US)",
      "lifetime_us_adult": 1.76e-7
    },
    {
      "label": "Death by lightning (lifetime, US)",
      "lifetime_us_adult": 0.00000354
    },
    {
      "label": "Death by bee/wasp/hornet sting (lifetime, US)",
      "lifetime_us_adult": 0.0001267
    },
    {
      "label": "Death in a car crash (lifetime, US)",
      "lifetime_us_adult": 0.0108
    }
  ],
  "personal_factor_multipliers": [
    {
      "factor": "Agricultural worker in sub-Saharan Africa or South Asia",
      "multiplier": 10000,
      "notes": "WHO 2019 snakebite burden report estimates 81,000-138,000 deaths/year globally, almost entirely in rural South Asia and sub-Saharan Africa, versus ~5/year in the US. Per-capita rate in high-burden regions (e.g., India, Nigeria) is roughly 4-5 orders of magnitude above the US baseline. WHO Global Snakebite Initiative, 2019."
    },
    {
      "factor": "No antivenom access within 6 hours of bite",
      "multiplier": 5,
      "notes": "WHO snakebite treatment guidelines indicate that case fatality rates for untreated envenomation by medically significant species can reach 5-10%, versus ~0.1-0.2% with prompt antivenom. The ~5x multiplier reflects the treated-vs-untreated gap documented in WHO 2019 snakebite guidelines and systematic reviews (Kasturiratne et al., Lancet 2008)."
    },
    {
      "factor": "Barefoot outdoor work in snake-active habitat",
      "multiplier": 3,
      "notes": "Epidemiological surveys in high-burden regions consistently show that foot/ankle bites account for the majority of snakebite incidents, predominantly among agricultural workers without foot protection. WHO 2019 snakebite burden report identifies barefoot agricultural exposure as the leading behavioral risk factor; protective footwear trials show ~3x reduction in bite incidence."
    },
    {
      "factor": "US urban/suburban resident with minimal outdoor exposure",
      "multiplier": 0.1,
      "notes": "Fatal US snakebite is heavily concentrated in southern and midwestern states within rattlesnake range and in outdoor settings (Greene et al., American Journal of Emergency Medicine, 2021). Urban residents with no hiking, camping, or agricultural exposure face substantially below-average risk; the 0.1x estimate is consistent with geographic concentration in Greene et al.'s 30-year case series."
    }
  ],
  "short_label": "Snake bite",
  "myth_framing": "overrated",
  "outcome_severity": "fatal",
  "exposure_pattern": "acute",
  "outcome_type": "death",
  "valence": "negative",
  "caveats": "This is a US-population-level figure. It does not apply globally: snakebite envenoming is one of the world's most important neglected tropical diseases, killing an estimated 81,000-138,000 people per year, almost entirely in South Asia and sub-Saharan Africa where antivenom access is limited. It also does not apply uniformly within the US — fatal bites concentrate heavily in southern and midwestern states and almost entirely in rattlesnake-range outdoor exposures.\n",
  "quality_score": {
    "d1": 5,
    "d2": 5,
    "d3": 5,
    "d4": 4,
    "d5": 4,
    "d6": 4,
    "d7": 4,
    "d8": 4,
    "avg": 4.375,
    "scored_by": "claude-code-8d",
    "scored_at": "2026-05-25",
    "methodology_version": "1.2"
  },
  "reviewer": "likelier-phase-5-agent",
  "last_reviewed": "2026-04-11",
  "reviewed": true,
  "generated_at": "2026-04-11",
  "image": {
    "alt": "A single stylized coiled snake silhouette against a warm sand-colored background, flat vector illustration."
  },
  "attribution": "Likelier — https://likelier.app",
  "license": "https://creativecommons.org/licenses/by-sa/4.0/",
  "support": "https://buymeacoffee.com/kgluszczyk?via=likelier&utm_content=api-fear-single",
  "canonical_url": "https://likelier.app/snake-bite-fatal"
}