jejuni by product (breast, tenderloin or thigh). The Fisher’s Exact Test for count

data showed that selleck kinase inhibitor tenderloins had a lower prevalence of Campylobacter spp. than breasts (P = 0.003) and thighs (P < 0.001). In 2005, the ratio C. coli:C. jejuni was different from the other years, with a higher percentage of C. coli than C. jejuni for that particular year (Table 1). No statistical differences were seen in the prevalence of C. jejuni by season (Table 3 and Table 4), although the months of October through March showed the highest number of C. jejuni and the lowest number of C. coli (Table 3). The data showed that two states had processing www.selleckchem.com/products/AZD0530.html plants where the prevalence was highest (Table 5), and the Kruskal-Wallis (KW) rank sum test for categorical variables showed again that the prevalence of C. jejuni was not influenced by season. However, the prevalence

was influenced by brand, plant, product, state and store (Table 4). The prevalence of C. coli appeared to vary by brand, plant, season, state and store. Table 3 Prevalence of Campylobacter spp. by season. J-M: January-March; A-J: April-June; JY-S: buy BIBF 1120 July-September; O-D: October-December       Percentage Months No-samples Positive (%, UCI-LCIa) C. jejuni C. coli J-M 124 50 (40, 49–31) 88 10 A-J 285 116 (41, 46–34) 66 30 JY-S 311 131 (41, 47–36) 56 34 O-D 35 11 (34, 49–17) 91 9 a Upper and lower confidence intervals. below No statistical difference was found for the number of positives by season. Table 4 Kruskal-Wallis (KW) rank sum test results for the analysis of the prevalence of Campylobacter spp. ( C. coli and C. jejuni ) by brand, plant, product, season, state and store Nominal variables Campylobacter spp. P value   KW Test P value

C. coli C. jejuni Brand 30.52 <0.001 <0.001 0.006 Plant 43.98 <0.001 <0.001 0.124 Product 33.33 <0.001 0.596 <0.001 Season 1.64 0.649 0.034 0.068 State 34.08 <0.001 <0.001 0.014 Store 18.11 <0.001 <0.001 0.008 Year 7.34 0.289 <0.001 0.196 Table 5 Prevalence of Campylobacter spp. by state and processing plant. The processing plants from GA and MS had the highest prevalence ( P   < 0.05) State Processing plant (Number of samples)a Positive (%) GA B (121) 47.9   I (29) 48.3   J (53) 58.5   R (51) 43.1 MS D (10) 44.4   O (193) 49.5 NC E (27) 40.7   H (116) 25.0   N (72) 36.1 TN L (24) 33.3 TX Q (23) 30.4 VA M (17) 11.8 a Plants from GA and MS = 456 samples; Plants from NC, TN, TX and VA = 279 samples. Plants A, C, F, G, K and P each represented less than 10 samples. PFGE analysis of isolates from the same processing plants but from different years showed a large variability of PFGE profiles. However, some PFGE types re-appeared in different years (Figure 1). Table 6 shows the Simpson’s index of diversity (SID) for 175 C.