Table 1.

Recovery of S. Reading from eggshell surfaces and egg contents.

		Number of positive samples in each treatment
Treatment Group	Total eggs	Egg shell surfaces	Egg contents
SRO	51	36/51 (70.5%a)	2/50* (4%a)
SRN	55	19/55 (34.5%b)	1/55 (1.8%a)

^a,bColumn not sharing a common superscript were different (P < 0.05).

¹Total eggs, total number of eggs laid by hens in each treatment group after inoculation.

²Numerators, number of positive samples.

³Denominators, total number of samples.

^4*, one missing egg content due to broken shell at the time of collection.

Abbreviations: SRO, Salmonella Reading outbreak strain; SRN, Salmonella Reading nonoutbreak strain.