Research Article
Rural Residents in China Are at Increased Risk of Exposure to Tick-Borne Pathogens Anaplasma phagocytophilum and Ehrlichia chaffeensis
Table 3
The seroprevalence of E. chaffeensis and A. phagocytophilum by age.
| Age | E. chaffeensis | A. phagocytophilum | OR (95% CI) | value
| Number positives/total number | Seropositivity rate % (95% CI) | Number positives/total number | Seropositivity rate % (95% CI) |
| Rural | | | | | | | 2–19 | 105/937 | 11.2 (9.2–13.2) | 139/936 | 14.8 (12.5–17.1) | 0.72 (0.6–1.0) | 0.02 | 20–29 | 241/1574 | 15.3 (13.5–17.1) | 318/1574 | 20.2 (18.2–22.2) | 0.71 (0.6–0.9) | 0.0003 | 30–39 | 217/1670 | 13.0 (11.4–14.6) | 423/1670 | 25.3 (23.2–27.4) | 0.44 (0.4–0.5) | <0.0001 | 40–49 | 147/1770 | 8.3 (7.0–9.6) | 246/1770 | 13.9 (12.3–15.5) | 0.56 (0.5–0.7) | <0.0001 | 50–59 | 70/1137 | 6.2 (4.8–7.6) | 124/1137 | 10.9 (9.1–12.7) | 0.5 (0.4–0.7) | <0.0001 | >60 | 11/234 | 4.6 (1.9–7.3) | 16/234 | 6.8 (3.7–10.0) | 0.67 (0.3–1.5) | 0.3 | Urban | | | | | | | 18–29 | 5/370 | 1.3 (0.2–2.5) | 4/370 | 1.1 (0–2.2) | 1.3 (0.3–4.7) | 1.0 | 30–39 | 3/138 | 2.1 (0.3–4.5) | 3/138 | 2.1 (0.3–4.5) | 1.0 (0.2–5.0) | 1.0 | 40–49 | 7/136 | 5.1 (1.4–8.8) | 3/136 | 2.2 (0.3–4.7) | 2.4 (0.6–9.5) | 0.2 | 50–59 | 3/98 | 3.0 (0.3–6.3) | 1/98 | 1.0 (0.9–3.0) | 3.0 (0.3–29.9) | 0.6 | >60 | 2/77 | 2.5 (1.0–6.0) | 1/77 | 1.3 (1.2–3.8) | 2.0 (0.2–22.8) | 1.0 |
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