Table 4.

Infection risks associated with rotavirus-contaminated lettuce after treatment with various E-beam irradiation doses

E-beam irradiation dose (kGy) (% rotavirus reduction)	Infection riska for each initial rotavirus contamination level (PFU/g)
	1,000	100	10	1
1.46 (94.4)	8.52 × 10−1	7.35 × 10−1	4.56 × 10−1	4.56 × 10−1
2.11 (99.7)	6.90 × 10−1	4.56 × 10−1	1.62 × 10−1	1.62 × 10−1
2.94 (99.97)	4.56 × 10−1	1.62 × 10−1	2.41 × 10−2	2.41 × 10−2
4.03 (99.97)	4.56 × 10−1	2.41 × 10−2	2.54 × 10−3	2.54 × 10−3

^aProbability of infection.