Table 2.
Seroprevalence of Cryptosporidium infection in parrots in different regions, sexes, species, ages, and seasons by enzyme linked immunosorbent assay (ELISA) in this study.
| Variable | Category | Number of tested samples | Number of positive samples | Prevalence (%) (95% CI) | P value | OR (95% CI) |
|---|---|---|---|---|---|---|
| Region | Beijing | 158 | 3 | 1.90 (0.00–4.03) | 0.18 | Reference |
| Weifang | 153 | 7 | 4.58 (1.26–7.89) | 2.48 (0.63–9.76) | ||
|
| ||||||
| Sex | Male | 163 | 6 | 3.68 (0.79–6.57) | 0.63 | Reference |
| Female | 148 | 4 | 2.70 (0.09–5.32) | 0.73 (0.20–2.63) | ||
|
| ||||||
| Species | Budgerigar (Melopsittacus undulatus) | 202 | 4 | 1.98 (0.06–3.90) | 0.0005 | Reference |
| Alexandrine parakeets (Psittacula eupatria) | 61 | 0 | 0.00 (—) | — | ||
| Lovebirds (Agapornis sp.) | 26 | 4 | 15.39 (1.52–29.25) | 9.00 (2.10–38.53) | ||
| Cockatiel (Nymphicus hollandicus) | 22 | 2 | 9.09 (0.00–21.10) | 4.95 (0.85–28.73) | ||
|
| ||||||
| Age | ≤5 months | 105 | 4 | 3.81 (0.15–7.47) | 0.63 | Reference |
| 6–12 months | 100 | 4 | 4.00 (0.16–7.84) | 1.05 (0.26–4.33) | ||
| 13–18 months | 106 | 2 | 1.89 (0.00–4.48) | 0.49 (0.09–2.71) | ||
|
| ||||||
| Season | Spring | 139 | 5 | 3.60 (0.50–6.69) | 0.73 | Reference |
| Summer | 172 | 5 | 2.91 (0.40–5.42) | 0.80 (0.23–2.83) | ||
|
| ||||||
| Total | 311 | 10 | 3.22 (1.26–5.18) | |||