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Table 1A Number of known risk factors in 148 patients with chronic hepatitis C infection evaluated at two Alabama tertiary care medical centers. A. Number and % of patients exposed to each risk factor (includes multiple exposures)*

From: Risk factors for acquisition of hepatitis C virus infection: a case series and potential implications for disease surveillance

KNOWN RISK FACTOR N (%) REFERENCES
No known risk factor 7 (4.7)
Injection Drug or intranasal cocaine use 71 (48) 7
Sharing of razors and toothbrushes 65 (44) 17,18
Body/ear piercing 63 (42.6) 7,17
Recipient of blood (products) before 1992 62 (41.9) 7, 19, 20
Sexual exposure 55 (37.2) 1,8
Occupational exposure to blood 47 (31.8) 21
Tattooing 25 (16.9) 17,22,23
Hemodialysis 0 (0) 24,21
Acupuncture 0 (0) 25,26
  1. *For example, if an individual has exposure to both blood products and tattooing, they are counted under "Tattooing" as well as "Recipient of blood (products) before 1992"