Table 6. Additional impact of IPV on seropositivity in Borno and Yobe States, North-Eastern Nigeria, 2013.
IPV in routine immunisation (RI) in 6–9 month olds and IPV in supplementary immunisation activities (SIAs) in 36–47 month olds. Analysis restricted to children receiving at least 3 OPV doses. SIA = supplementary immunization activity; RI = routine immunization; OPV = oral poliovirus vaccine; IPV = inactivated poliovirus vaccine; n = number of children; N = total number of children.
| Type 1 | Type 2 | Type 3 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Method | IPV | n/N | % (95% CI) | p-value | n/N | % (95% CI) | p-value | n/N | % (95% CI) | p-value |
| RI | No | 85/112 | 75.9 (67.2–82.9) | 0.010 | 92/112 | 82.1 (74.0–88.1) | 0.090 | 77/112 | 68.7 (59.7–76.6) | 0.015 |
| Yes | 118/133 | 88.7 (82.2–93.0) | 120/133 | 90.2 (84.0–94.2) | 110/133 | 82.7 (75.4–88.2) | ||||
| SIA | No | 133/143 | 93.0 (87.6–96.1) | 0.427 | 133/143 | 93.0 (87.6–96.1) | 0.271 | 128/143 | 89.5 (83.4–93.5) | 0.520 |
| Yes | 114/119 | 95.8 (90.5–98.2) | 115/119 | 96.6 (91.7–98.7) | 110/119 | 92.4 (86.2–96.0) | ||||