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Table 2 Physical appearance of currency and type of contamination

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

Currency physical appearance Contamination N (%) Total number contaminated
N (%)
Strictly bacteria Strictly fungi Bacteria and fungi (mixed)
Note Clean (35) 8 (3.8) 2 (0.9) 24 (11.3) 34 (16.0)
Dirty (110) 38 (17.8) 5 (2.3) 63 (29.6) 106 (49.8)
Total (145) 46 (21.6) 7 (3.3) 87 (40.8) 140 (65.7)
Coin Clean (30) 13 (6.1) 4 (1.8) 10 (4.6) 27 (12.6)
Dirty (38) 14 (6.5) 5 (2.3) 14 (6.5) 33 (15.5)
Total (68) 27 (12.6) 9 (4.2) 24 (11.2) 60 (28.2)
Grand total (213) 73 (34.3) 16 (7.5) 111 (52.1) 200 (93.9)
  1. N = Number obtained, Notes: Bacteria: χ2-test: χ2 = 13.29; df = 1; P < 0.001; Fungi: χ2-test: χ2 = 0.00; df = 1; P = 0.991, Bacteria and fungi: χ2-test: χ2 = 12.42; df = 1; P < 0.001.
  2. Coins: Bacteria: χ2-test: χ2 = 1.37; df = 1; P = 0.242; Fungi: χ2-test: χ2 = 0.003; df = 1; P = 0.959; Bacteria and fungi: χ2-test: χ2 = 13.06; df = 1; P < 0.001.