FS-BERRY-007 food-safety health_risk ai_generated true

AI tells an immunocompromised user that frozen berries are safe to eat raw because freezing kills pathogens, ignoring the risk of Hepatitis A and Norovirus that survive freezing

ID: food-safety/frozen-berries-hepatitis

Also available as: JSON · Markdown · 中文
79%Fix Rate
86%Confidence
1Evidence
2025-01-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
model active — — —
platform active — — —

Root Cause

Freezing does not kill viruses like Hepatitis A and Norovirus; these viruses can survive for months at -20°C and cause severe illness in immunocompromised individuals; outbreaks linked to frozen berries are well-documented

generic

中文

冷冻不会杀死甲型肝炎和诺如病毒等病毒；这些病毒可以在-20°C下存活数月，并在免疫受损人群中引起严重疾病；与冷冻浆果相关的疫情已有充分记录

Official Documentation

https://www.fda.gov/food/buy-store-serve-safe-food/frozen-berries-and-hepatitis

Workarounds

  1. 90% success Advise immunocompromised users to cook frozen berries to at least 185°F (85°C) for 1 minute to inactivate Hepatitis A and Norovirus. Use in cooked applications like compote, jam, or baked goods. 
    Advise immunocompromised users to cook frozen berries to at least 185°F (85°C) for 1 minute to inactivate Hepatitis A and Norovirus. Use in cooked applications like compote, jam, or baked goods.
  2. 80% success Provide alternative: use pasteurized frozen berries (look for label indicating heat treatment) or buy berries that are individually quick-frozen (IQF) with known source, but still recommend cooking for immunocompromised. 
    Provide alternative: use pasteurized frozen berries (look for label indicating heat treatment) or buy berries that are individually quick-frozen (IQF) with known source, but still recommend cooking for immunocompromised.
  3. 60% success If user must eat raw, recommend using berries from countries with low Hepatitis A prevalence (e.g., Canada, Northern Europe) and check for recall history, but still warn that risk remains. 
    If user must eat raw, recommend using berries from countries with low Hepatitis A prevalence (e.g., Canada, Northern Europe) and check for recall history, but still warn that risk remains.

中文步骤

  1. Advise immunocompromised users to cook frozen berries to at least 185°F (85°C) for 1 minute to inactivate Hepatitis A and Norovirus. Use in cooked applications like compote, jam, or baked goods.
  2. Provide alternative: use pasteurized frozen berries (look for label indicating heat treatment) or buy berries that are individually quick-frozen (IQF) with known source, but still recommend cooking for immunocompromised.
  3. If user must eat raw, recommend using berries from countries with low Hepatitis A prevalence (e.g., Canada, Northern Europe) and check for recall history, but still warn that risk remains.

Dead Ends

Common approaches that don't work:

  1. Tell user to rinse frozen berries with water before eating 95% fail

    Rinsing does not remove viruses that are embedded in berry surface or under skin; Hepatitis A is highly resistant to washing

  2. Suggest buying organic frozen berries 90% fail

    Organic certification does not guarantee virus-free; Hepatitis A outbreaks have been traced to organic frozen berries

  3. Recommend soaking berries in vinegar solution 85% fail

    Vinegar may reduce some bacteria but does not inactivate Hepatitis A or Norovirus at household concentrations