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Area of Science:

  • Foodborne illness epidemiology
  • Plant-based food safety
  • Nutritional science

Background:

  • Increasing consumer demand for plant-based proteins and meal delivery services.
  • Daily Harvest launched a plant-based Crumbles product line in 2022.
  • A recall of French Lentil and Leek Crumbles followed consumer reports of gastrointestinal symptoms.

Purpose of the Study:

  • To investigate the relationship between Daily Harvest food products and reported illnesses.
  • To identify the potential source of the gastrointestinal symptoms.
  • To assess the role of tara flour in the outbreak.

Main Methods:

  • Epidemiologic investigation using case data from a law firm.
  • Independent review of data for 338 individuals, including 264 with food exposure details.
  • Calculation of minimal attack rates for various products and consumption levels.

Main Results:

  • All surveyed individuals (100%) who consumed Lentil and Leek Crumbles reported illness.
  • Highest minimal attack rates were observed for Lentil and Leek Crumbles (1.4%).
  • Increased illness risk correlated with higher consumption of Lentil and Leek Crumbles.

Conclusions:

  • Tara flour is the suspected source of illness in the Daily Harvest outbreak.
  • Further research is required to determine the safety of tara flour for human consumption.
  • Nontraditional data sources are valuable for identifying foodborne illness origins.