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Table 1 Relationship between currency denomination and type of contamination

From: Public health implications of contamination of Franc CFA (XAF) circulating in Buea (Cameroon) with drug resistant pathogens

Currency denomination (N) Contamination N (%) Total number contaminated N (%)
Strictly bacteria Strictly fungi Bacteria and fungi
Note 500 (22) 9 (4.2) 0 (0) 13 (6.1) 22 (100)
1000 (49) 13 (6.1) 2 (0.9) 32 (15.0) 47 (95.9)
2000 (44) 12 (5.6) 3 (1.4) 28 (13.1) 43 (97.7)
5000 (15 ) 9 (4.2) 1 (0.5) 4 (1.9) 14 (93.3)
10000 (15) 3 (1.4) 1 (0.5) 10 (4.7) 14 (93.3)
Total (145) 46 (21.5) 7 (3.3) 87 (40.8) 140 (96.6)
Coin 50 (22) 11 (5.2) 1 (0.5) 8 (3.7) 20 (90.9)
100 (37) 14 (6.6) 6 (2.8) 12 (5.6) 32 (86.5)
500 (09) 2 (0.9) 2 (0.9) 4 (1.9) 8 (88.9)
Total (68) 27 (12.7) 9 (4.2) 24 (11.3) 60 (88.2)
Grand total (213) 73 (34.2) 16 (7.5) 111 (52.1) 200 (93.6)
  1. Bacteria: χ2-test: χ2 = 7.034; df =1; P = 0.008; Fungi: χ2-test: χ2 = 5.320; df =1; P = 0.021.
  2. Bacteria and fungi: χ2-test: χ2 = 6.241; df =1; P = 0.018; Currency denomination: χ2-test: χ2= 3.868; df = 1; P = 0.049; N = Number obtained.