Table 3.
Human syndromic incidences per 1000 person-years and animal syndromic and mortality incidences per 100 household-years and relative sensitivity of health facility surveillance compared to health facility plus monthly household surveillance.
| Event | Health facility surveillance1 |
Health facility plus monthly household surveillance 2 |
Relative sensitivity |
|||
|---|---|---|---|---|---|---|
| Events / Subject-years |
Incidence (95% CI) | Events / Subject-years |
Incidence (95% CI) |
Incidence rate Ratio (95% CI) |
||
| Humans | ||||||
| AFI | 69/1136 | 61 (48, 77) | 164/1078 | 152 (130, 178) | 0.40 (0.30, 0.53) | |
| Severe AFI | 16/1136 | 14 (9, 23) | 31/1078 | 29 (20, 41) | 0.49 (0.26, 0.88) | |
| ARI | 56/1136 | 49 (38, 64) | 102/1080 | 94 (78, 115) | 0.52 (0.37, 0.72) | |
| Severe ARI | 29/1136 | 26 (18, 37) | 40/1080 | 37 (27, 51) | 0.69 (0.42, 1.11) | |
| ADI | 27/1137 | 24 (16, 35) | 45/1081 | 42 (31, 56) | 0.57 (0.35, 0.91) | |
| Severe ADI | 9/1137 | 8 (4, 15) | 14/1081 | 13 (8, 22) | 0.61 (0.25, 1.39) | |
| Any | 110/1135 | 97 (80, 117) | 246/1077 | 228 (201, 260) | 0.42 (0.34, 0.53) | |
| Any severe | 49/1135 | 43 (32, 57) | 83/1077 | 77 (62, 96) | 0.56 (0.39, 0.79) | |
| Canines | ||||||
| Any syndrome | 13/118 | 11 (6, 19) | 21/140 | 15 (10,23) | 0.74 (0.36, 1.46) | |
| All-cause deaths | 1/118 | 1 (0, 6) | 54/140 | 38 (29, 50) | 0.02 (0.00, 0.10) | |
| Swine | ||||||
| Any syndrome | 14/87 | 16 (9, 28) | 27/95 | 29 (19, 42) | 0.57 (0.29, 1.06) | |
| All-cause deaths | 14/87 | 16 (9, 28) | 54/95 | 57 (43, 75) | 0.28 (0.15, 0.50) | |
| Equines | ||||||
| Any syndrome | 9/51 | 18 (9, 34) | 12/40 | 31 (17, 54) | 0.59 (0.24, 1.39) | |
| All-cause deaths | 2/51 | 4 (1, 16) | 7/40 | 18 (8, 37) | 0.22 (0.03, 0.92) | |
| Bovines | ||||||
| Any syndrome | 1/17 | 6 (1, 44) | 5/14 | 36 (15, 88) | 0.17 (0.01, 1.04) | |
| All-cause deaths | 2/17 | 12 (3, 49) | 5/14 | 36 (15, 88) | 0.34 (0.05, 1.55) | |
1 The denominator for the HFS uses the number of humans and the number of households owning domestic animals at the baseline survey. 2The denominator for HFS + MHS is adjusted for human migration and household domestic animal ownership changes identified at monthly household visits.