Ingestion of Contaminated Meat Eggs and Dairy Products

Contaminated food can result from a variety of sources. A more general equation for calculating CDIs from food is

BW x AT

where CF is the pollutant concentration in the food (mg/kg), IR is the ingestion rate (kg/meal) [suggested values: 0.28kg/meal for beef (95th percentile; Pao et al., 1982), 0.112kg/meal for beef (50th percentile; Pao et al., 1982), for specific values for other meats see Pao et al. (1982); 0.150kg/meal for eggs (95th percentile; Pao et al., 1982), 0.064kg/meal for eggs (50th percentile; Pao et al., 1982); for specific values for milk, cheese, and other dairy products see Pao et al. (1982)], FI is the fraction of food ingested from the contaminated source (as opposed to food from a noncontaminated source; unitless), EF is the exposure frequency (meals/year) (region-specific values must be used), ED is the exposure duration (years) [for lifetime exposure use 70 years, use 30 years for living at one residence (national upper-bound time (90th percentile; EPA, 1989b), use 9 years for living at one residence (national median time (50th percentile: EPA, 1989b)], BW is the body weight [for an average adult use 70kg; for age-specific values see EPA (1989b)], and AT is the averaging time (period over which the exposure is averaged, days) [for noncar-cinogenic effects use ED x 365 days/year, for carcinogenic effects use 70 years x 365 days/year].

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