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Research Article

Table 4

Seroprevalence of T. gondii infection by age in yaks on the Qinghai–Tibetan Plateau in 2018 and 2019.

Ages Qinghai
Tibet
Qinghai and Tibet
2018
2019
Subtotal
2018
2019
Subtotal
2018
2019
Subtotal
Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive/No. samples) 95% CI Positive rates % (No. positive /No. sample) 95% CI Positive rates % (No. positive /No. sample) 95% CI Positive rates % (No. positive /No. sample) 95% CI
0<year≤1 6.61(8/121)bc 2.9–12.6 2.99(4/134)c 0.8–7.5 4.71(12/255)b 2.5–8.1 5.00(1/20)a 0.1–24.9 27.27(3/11)a 6.0–61.0 12.90(4/31)a 3.6–29.8 6.38(9/141)a 3.0–11.8 4.83(7/145)c 2.0–9.7 5.59(16/286)b 3.2–8.9
1<year≤3 7.76(9/116)bc 3.6–14.2 7.76(17/219)bc 4.6–12.1 7.76(26/335)b 5.1–11.2 9.59(14/146)a 5.3–15.6 11.76(26/221)a 7.8–16.8 10.90(40/367)a 7.9–14.5 8.78(23/262)a 5.7–12.9 9.77(43/440)abc 7.2–12.9 9.40(66/702)a 7.4–11.8
3<year≤5 3.42(4/117)c 0.9–8.5 8.61(13/151)b 4.7–14.3 6.34(17/268)b 3.7–10.0 7.98(19/238)a 4.9–12.2 9.55(30/314)a 6.54–13.4 8.88(49/552)a 6.6–11.6 6.48(23/355)a 4.2–9.6 9.25(43/465)bc 6.8–12.3 8.05(66/820)ab 6.3–10.1
5<year≤7 17.78(16/90)a 10.5–27.3 18.03(11/61)a 9.4–30.0 17.88(27/151)a 12.1–24.9 6.81(19/279)a 4.2–10.4 12.66(39/308)a 9.2–16.9 9.88(58/587)a 7.6–12.6 9.49(35/369)a 6.7–12.9 13.55(50/369)a 10.2–17.5 11.52(85/738)a 9.3–14.0
year>7 12.12(4/33)ab 3.4–28.2 15.25(9/59)ab 7.2–27.0 14.13(13/92)a 4.7–14.3 12.33(9/73)a 5.8–22.1 8.22(6/73)a 3.1–17.0 10.27(15/146)a 5.9–16.4 12.26(13/106)a 6.7–20.0 11.36(15/132)ab 6.5–18.1 11.76(28/238)a 8.0–16.6
Total 8.60(41/477) 6.2–11.5 8.65(54/624) 6.6–11.1 8.63(95/1101) 7.0–10.5 8.20(62/756) 6.4–10.4 11.22(103/927) 9.3–13.4 9.86(166/1683) 8.5–11.4 8.35(103/1233) 6.9–10.0 10.19(158/1551) 8.7–11.8 9.38(261/2784) 8.3–10.5

Note: The same lowercase letters within columns represent no significant differences between groups (p > 0.05) and different lowercase letters within columns represent significant differences between groups (p < 0.05).

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