{
  "slug": "restaurant-food-poisoning",
  "question": "What are the odds of being hospitalized from food poisoning after eating at a restaurant?",
  "category": "food",
  "tags": [
    "food",
    "travel"
  ],
  "no_reliable_estimate": false,
  "perceived": {
    "description": "Most diners carry a vague, diffuse worry about getting sick from a restaurant meal — the kind that surfaces after spotting an unwashed cutting board, ordering something slightly undercooked, or hearing about a local outbreak. Few people would put a number on it, but the intuitive sense is that a genuinely bad case requiring a hospital visit is somewhere in the range of once-in-a-decade to once-in-a-lifetime, with a rough feel of perhaps 1-in-10 to 1-in-50 per year. That is comfortably above the actual epidemiology, which puts the lifetime hospitalization risk closer to 1-in-55 — real enough to warrant attention, but not the lurking catastrophe that a nervous diner might imagine.\n",
    "rough_estimate": "most diners implicitly estimate a serious illness risk of 1-in-10 to 1-in-50 per year",
    "kind": "intuition"
  },
  "native": {
    "display": "~1 in 762,000 per restaurant meal (hospitalization)",
    "numerator": 1,
    "denominator": 762000,
    "unit": "per restaurant meal",
    "population": "US adults eating at restaurants, catering establishments, or delis"
  },
  "normalized": {
    "lifetime_us_adult": 0.0173,
    "display": "~1 in 58 US adults hospitalized from restaurant food poisoning over a lifetime",
    "log_value": -1.762,
    "assumptions": "CDC/Scallan 2011 combined estimate: ~128,000 US hospitalizations per year from domestically acquired foodborne illness (known pathogens plus unspecified agents). CDC outbreak surveillance (MMWR FoodNet reports) consistently attributes roughly 60% of reported foodborne illness outbreaks to restaurants, catering, and delis. Applying that fraction: 128,000 × 0.60 ≈ 76,800 restaurant-linked hospitalizations per year. US adults (~260 million) eat out approximately 4-5 times per week on average (USDA ERS data), approximated here as 225 meals per year × 260 million adults = 58.5 billion restaurant meals per year. Per-meal hospitalization risk: 76,800 / 58.5e9 ≈ 1.31 per million meals (1 in ~762,000). Lifetime probability for a US adult eating out 225 meals/year over 59 years of adult life: 1 - (1 - 1.31e-6)^(225 × 59) ≈ 1.73%, or roughly 1 in 58. Uncertainty band reflects: (low) restaurant fraction 50%, 150 meals/year; (high) restaurant fraction 70%, 300 meals/year, with ~10% upward adjustment for under-ascription of restaurant source.\n",
    "uncertainty": {
      "low": 0.0084,
      "high": 0.032
    },
    "scope": "us_adult_lifetime"
  },
  "sources": [
    {
      "url": "https://wwwnc.cdc.gov/eid/article/17/1/p1-1101_article",
      "title": "Foodborne Illness Acquired in the United States — Major Pathogens",
      "publisher": "CDC Emerging Infectious Diseases / Scallan et al.",
      "source_type": "peer_reviewed",
      "statistic": "31 major pathogens cause ~9.4 million illnesses, ~55,961 hospitalizations, and ~1,351 deaths per year in the US",
      "excerpt": "\"We estimated that 31 pathogens acquired in the United States caused 9.4 million episodes of foodborne illness (90% credible interval [CrI] 6.6–12.7 million), 55,961 hospitalizations (90% CrI 39,534–75,741), and 1,351 deaths (90% CrI 712–2,268) each year.\"\n",
      "source_date": "2011-01-01",
      "source_accessed": "2026-05-02",
      "archive_url": "http://web.archive.org/web/20260505062544/https://wwwnc.cdc.gov/eid/article/17/1/p1-1101_article",
      "calculation_notes": "This is the known-pathogen half of Scallan 2011. Combined with the companion unspecified-agents paper (Scallan et al. 2011b), total hospitalizations reach ~127,839 per year (~56,000 + ~71,878). We use 128,000 as the round CDC-cited combined total. Applying 60% restaurant attribution: ~76,800 restaurant-linked hospitalizations/year. Divided by 58.5 billion restaurant meals/year (260M US adults × 225 meals/year): per-meal risk ≈ 1.31 × 10⁻⁶. Lifetime: 1 - (1 - 1.31e-6)^(13,275 meals over 59 years) ≈ 0.0173.\n"
    },
    {
      "url": "https://wwwnc.cdc.gov/eid/article/17/1/p2-1101_article",
      "title": "Foodborne Illness Acquired in the United States — Unspecified Agents",
      "publisher": "CDC Emerging Infectious Diseases / Scallan et al.",
      "source_type": "peer_reviewed",
      "statistic": "Unspecified agents add ~71,878 hospitalizations per year; combined known + unspecified total is ~127,839 hospitalizations/year",
      "excerpt": "\"We estimated that unknown agents acquired in the United States caused 38.4 million (90% CrI 19.8–61.2 million) episodes of foodborne illness, 71,878 (90% CrI 9,924– 157,340) hospitalizations.\"\n",
      "source_date": "2011-01-01",
      "source_accessed": "2026-05-02",
      "archive_url": "http://web.archive.org/web/20260503093309/https://wwwnc.cdc.gov/eid/article/17/1/p2-1101_article",
      "calculation_notes": "Companion paper to Scallan 2011a. Adds unspecified-agent hospitalizations to reach the combined ~128,000/year figure used as the denominator basis for all restaurant-attribution calculations.\n",
      "independence_note": "Scallan 2011a and 2011b partition the same CDC FoodNet/surveillance data into known-pathogen and unspecified-agent components. They share methodology and first author; treat as a single methodological pipeline, not two independent confirmations of the 128,000 hospitalization figure.\n"
    },
    {
      "url": "https://www.cdc.gov/foodsafety/pdfs/foodborne-disease-outbreaks-annual-summary-report-2018-508.pdf",
      "title": "Foodborne Disease Outbreaks: Annual Summary Report, United States, 2018",
      "publisher": "CDC / National Outbreak Reporting System (NORS)",
      "source_type": "govt_report",
      "statistic": "Restaurants (sit-down and fast food) and catering/banquet establishments accounted for the majority of reported foodborne illness outbreaks with a known setting",
      "excerpt": "\"Of the 876 outbreaks with a confirmed or suspected food vehicle and a single implicated food preparation setting, 57% occurred in a restaurant or catering or banquet facility.\"\n",
      "source_date": "2021-10-01",
      "source_accessed": "2026-05-02",
      "calculation_notes": "CDC's 2018 NORS annual summary reports ~57% of setting-identified outbreaks attributable to restaurants and catering/banquet settings combined. This is consistent with MMWR reports from other years (range 55–65%). We use 60% as the central estimate for restaurant-fraction attribution in the lifetime calculation. Note that reported outbreaks are a subset of total foodborne illness — sporadic cases far outnumber outbreak-associated ones — so this fraction is an approximation for all restaurant-linked hospitalizations.\n"
    }
  ],
  "comparison_anchors": [
    {
      "label": "Death from foodborne illness (lifetime, US adult)",
      "lifetime_us_adult": 0.000537
    },
    {
      "label": "Hospitalization from a fall at home (lifetime, US adult)",
      "lifetime_us_adult": 0.12
    },
    {
      "label": "Blood clot after a long-haul flight (per flight)",
      "lifetime_us_adult": 0.000215
    }
  ],
  "personal_factor_multipliers": [
    {
      "factor": "Eating raw shellfish (oysters, clams, raw bar)",
      "multiplier": 10,
      "notes": "Raw bivalves are the dominant vehicle for norovirus and Vibrio vulnificus — the latter carrying a case-fatality rate >50% in immunocompromised individuals. FDA estimates 85% of Vibrio vulnificus illnesses are linked to raw oyster consumption. A raw-oyster eater adds a discrete high-risk exposure on top of the baseline meal rate; the roughly 10x multiplier reflects the markedly higher per-serving hospitalization rate for this food category compared to the average restaurant meal.\n"
    },
    {
      "factor": "Eating at a buffet vs. table service",
      "multiplier": 3,
      "notes": "Buffets have longer food holding times, repeated customer handling, and variable temperature control — all factors that favor pathogen growth. CDC outbreak data consistently show higher attack rates and more frequent Clostridium perfringens and Staph aureus outbreaks associated with buffet and catering/banquet settings compared to table-service restaurants. A 2-4x elevation is a reasonable heuristic; we use 3x as the central estimate.\n"
    },
    {
      "factor": "Immunocompromised status (HIV, chemotherapy, organ transplant, age >65)",
      "multiplier": 5,
      "notes": "Listeria, Salmonella non-typhi, and Cryptosporidium cause disproportionately severe disease — including hospitalization and death — in immunocompromised adults. CDC estimates that adults over 65, pregnant women, and those with weakened immune systems face roughly 5-17x higher risk of invasive Salmonella and up to 10x higher risk of Listeria hospitalization compared to healthy adults under 65.\n"
    },
    {
      "factor": "Eating at a restaurant in a developing country",
      "multiplier": 8,
      "notes": "Traveler's diarrhea is the most common travel-related illness; 20-50% of travelers to high-risk regions experience it. Hospitalization risk is elevated by exposure to ETEC, Shigella, Campylobacter, and Cryptosporidium at rates not seen in US restaurant settings. A conservative 8x multiplier for the per-meal hospitalization risk in high-risk regions (South Asia, sub-Saharan Africa, parts of Latin America) versus the US baseline.\n"
    }
  ],
  "short_label": "Restaurant food poisoning",
  "myth_framing": "calibrated",
  "outcome_severity": "serious_harm",
  "exposure_pattern": "recurring",
  "outcome_type": "recoverable_injury",
  "valence": "negative",
  "caveats": "The denominator assumes all US adults eat out ~225 times per year; the actual distribution is right-skewed — heavy restaurant users (daily lunches, frequent travel) face higher cumulative lifetime exposure than the average implies. The 60% restaurant-attribution fraction comes from reported outbreak data; sporadic cases (the vast majority) are rarely traced back to their source, so the true fraction could be higher or lower. Under-reporting is substantial — only an estimated 1-2% of foodborne illness hospitalizations appear in outbreak surveillance. The lifetime figure is therefore best read as an order-of-magnitude estimate rather than a precise actuarial number. Risk is also heterogeneous by pathogen: norovirus dominates case counts but rarely hospitalizes; Salmonella and Clostridium perfringens drive most restaurant-associated hospitalizations.\n",
  "quality_score": {
    "d1": 5,
    "d2": 5,
    "d3": 5,
    "d4": 5,
    "d5": 5,
    "d6": 5,
    "d7": 5,
    "d8": 5,
    "avg": 5,
    "scored_by": "extracted-from-transcript",
    "scored_at": "2026-05-03",
    "methodology_version": "1.0"
  },
  "reviewer": "quality-review-agent-2026-05-03",
  "last_reviewed": "2026-05-03",
  "reviewed": true,
  "generated_at": "2026-05-02",
  "image": {
    "alt": "A muted flat vector illustration of a fork and spoon crossed over an empty plate on a pale background."
  },
  "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/restaurant-food-poisoning"
}