Table 3. Temporal trends of 2009 H1N1 seroprevalence by demographic characterstics among the vaccinated subjects,Guangdong, 2010.
| No. Tested (seroprevalence%, 95% CI) | |||
| Survey 1 | Survey 2 | Survey 3 | |
| Gender | |||
| Male | 181(51.3, 44.0–58.6) | 218(50.9, 44.3–57.5) | 245(46.5, 40.3–52.7) |
| Female | 227(47.1, 40.6–53.6) | 290(54.4, 48.7–60.1) | 261(52.1, 46.0–58.2) |
| Age group (years) | |||
| 0∼5 | 25(32.0, 13.7–50.3) | 14(42.8, 16.9–68.7) | 48(43.7, 29.7–57.7) |
| 6∼15 | 108(52.7, 43.3–62.1) | 143(50.3, 42.1–58.5) | 167(45.5, 37.9–53.1) |
| 16∼25 | 117(49.5, 40.4–58.6) | 149(63.7, 56.0–71.4) | 151(57.6, 49.7–65.5) |
| 26∼60 | 136(50.7, 42.3–59.1) | 155(49.0, 41.1–56.9) | 110(48.1, 38.8–57.4) |
| >60 | 22(36.3, 16.2–56.4) | 47(42.5, 28.4–56.6) | 30(43.3, 25.6–61.0) |
| Urban/rural | |||
| Capital-city | 194(38.6, 31.7–45.5) | 256(51.1, 45.0–57.2)* | 249(53.8, 47.6–60.0) * |
| Other urban areas | 137(59.8, 51.6–68.0) | 149(53.0, 45.0–61.0) | 156(39.1, 31.4–46.8)# * |
| Rural areas | 77(55.8, 44.7–66.9) | 103(57.2, 47.6–66.8) | 101(54.4, 44.7–64.1) |
CI:Confidence Interval;
*
compared with survey1,P<0.05(by Chi-square);
#
compared with survey2, P<0.05(by Chi-square);