Table 2 Maximal likelihood estimation (MLE) and minimum infection rate (MIR) flaviviruses during mosquito activity season of Chongming Island, Shanghai in 2021
Detected virus | Survey areas | Host | No. individuals | No. PP | No. pools | Positive pool rate (%) | Bias corrected MLE (95% CI) | MIR (95%Â CI) | |
|---|---|---|---|---|---|---|---|---|---|
Direction | Inhabitant | ||||||||
TMUV | Eastern | Poultry farm | Culex tritaeniorhynchus | 3154 | 2 | 65 | 3.08 | 0.64 (0.11–2.10) | 0.63 (0.00–1.51) |
In total areas | Cx. tritaeniorhynchus | 12,723 | 2 | 285 | 0.70 | 0.16 (0.03–0.51) | 0.16 (0.00–0.37) | ||
CHAOV | Eastern | Buffalo farm | Cx. tritaeniorhynchus | 3194 | 1 | 71 | 1.41 | 0.31 (0.02–1.52) | 0.31 (0.00–0.93) |
Cow farm | Cx. tritaeniorhynchus | 3800 | 1 | 81 | 1.23 | 0.26 (0.02–1.28) | 0.26 (0.00–0.78) | ||
In total areas | Cx. tritaeniorhynchus | 12,723 | 2 | 285 | 0.70 | 0.16 (0.03–0.51) | 0.16 (0.00–0.37) | ||
QBV | Eastern | Cx. tritaeniorhynchus | 10,148 | 40 | 217 | 18.43 | 4.33 (3.14–5.84) | 3.94 (2.72–5.16) | |
|  | Buffalo farm | Cx. tritaeniorhynchus | 3194 | 22 | 71 | 30.99 | 8.22 (5.31–12.30) | 6.89 (4.02–9.76) | |
Cow farm | Cx. tritaeniorhynchus | 3800 | 4 | 81 | 4.94 | 1.06 (0.35–2.54) | 1.05 (0.02–2.08) | ||
Poultry farm | Cx. tritaeniorhynchus | 3154 | 14 | 65 | 21.54 | 4.95 (2.84–8.14) | 4.44 (2.12–6.76) | ||
Central | Cx. tritaeniorhynchus | 487 | 1 | 18 | 5.56 | 1.99 (0.12–9.64) | 2.05 (0.00–6.07) | ||
|  | Cow farm | Cx. tritaeniorhynchus | 445 | 1 | 15 | 6.67 | 2.17 (0.13–10.51) | 2.25 (0.00–6.65) | |
Western | Cx. tritaeniorhynchus | 2088 | 5 | 50 | 10.00 | 2.45 (0.93–5.40) | 2.39 (0.30–4.49) | ||
|  | Cow farm | Cx. tritaeniorhynchus | 606 | 3 | 18 | 16.67 | 5.09 (1.40–13.74) | 4.95 (0.00–10.54) | |
Chicken farm | Cx. tritaeniorhynchus | 1482 | 2 | 32 | 6.25 | 1.36 (0.25–4.45) | 1.35 (0.00–3.22) | ||
In total areas | Cx. tritaeniorhynchus | 12,723 | 46 | 285 | 16.14 | 3.92 (2.91–5.18) | 3.62 (2.57–4.66) | ||
Eastern | Buffalo farm | Aedes vexans | 383 | 1 | 14 | 7.14 | 2.49 (0.15–11.92) | 2.61 (0.00–7.72) | |
In total areas | Ae. vexans | 409 | 1 | 22 | 4.55 | 2.34 (0.14–11.22) | 2.44 (0.00–7.23) | ||