Table. Analysis of pre- and postintervention survey data for biosecurity practices for HPAI (H5N1) virus in Gazipur and Dinajpur districts, Bangladesh, 2009–10*.
| Biosecurity practice | No. persons surveyed (% aware of practice; 95% CI) |
||||
|---|---|---|---|---|---|
| Gazipur |
Dinajpur |
||||
| Baseline survey, n = 821 | Final survey, n = 300† | Baseline survey, n = 525 | Final survey, n = 209† | ||
| Awareness of bird deaths caused by HPAI | 191 (23; 21–26) | 219 (73; 68–78) | 116 (22; 19–26) | 88 (42; 36–49) | |
| Awareness of bird culling resulting from HPAI | 163 (20; 17–23) | 186 (62; 56–67) | 56 (11; 8–14) | 47 (22; 17–29) | |
| Awareness of HPAI cases among humans | 138 (17; 14–20) | 172 (57; 52–63) | 21 (4; 3–6) | 113 (54; 47–61) | |
| Understand how HPAI is spread | |||||
| Do not know how HPAI is spread | 209 (25; 23–29) | 42 (14; 11–18) | 286 (54; 50–59) | 21 (10; 7–15) | |
| Perceive that wild birds are the cause | 466 (57; 53–60) | 207 (69; 64–74)‡ | 134 (26; 22–29) | 154 (74; 67–80) | |
| Recognize sick poultry as a vector | 43 (5; 4–7) | 140 (47; 41–52) | 53 (10; 8–13) | 61 (29; 23–36) | |
| Awareness of how to protect people | |||||
| Wear masks | 190 (23; 20–26) | 204 (68; 63–73) | 44 (8; 6–11) | 94 (45; 38–52) | |
| Wear gloves | 122 (15; 13–17) | 136 (45; 40–50) | 54 (10; 8–13) | 75 (36; 30–43) | |
| Wash hands | 207(25; 23–29) | 166(55; 50–60) | 58 (11; 9–14) | 139 (67; 60–73) | |
| Kids should not handle birds | 3 (0; 0.1–1) | 203 (68; 62–73) | 1 (0; 0.01–1) | 54 (26; 20–32) | |
| No need to protect | 243 (30; 27–33) | 0 (0) | 294 (56; 52–60) | 4 (2; 0.6–5) | |
| Awareness of how to protect birds | |||||
| Separate chickens and ducks | 28 (3; 3–4) | 92 (31; 26–36) | 18 (3; 2–5) | 36 (17; 13–23) | |
| Clean and disinfect poultry cages | 288 (35; 32–38) | 182 (61; 55–66) | 39 (7; 5–10) | 99 (47; 41–54) | |
| Restrict entry to farms | 226 (28; 25–31) | 131(44; 38–49) | 56 (11; 8–14) | 56 (27; 21–33) | |
| Vaccinate against Newcastle disease | 12 (1; 0.8–2) | 67 (22; 18–27) | 7 (1; 0.6–3) | 47 (22; 17–29) | |
| Properly dispose of feces | 158 (19; 17–22) | 79 (26; 22–32)§ | 16 (3; 2–5) | 117 (56; 49–63) | |
| Wear proper clothing | 38 (5; 3–6) | 67 (22; 18–27) | 29 (6; 4–9) | 43 (21; 16–27) | |
| Clean and disinfect transport vehicles | 35 (4; 3–6) | 105 (35; 30–40) | 10 (2; 1–4) | 20 (10; 6–14) | |
| Keep dogs and cats away from farms | 92 (11; 9–14) | 99 (33; 28–39) | 22 (4; 3–6) | 33 (16; 11–21) | |
| Do not know | 170 (21; 18–24) | 46 (15; 12–20)¶ | 267 (51; 47–55) | 2 (1; 0.04–4) | |
| Bird purchase preference | |||||
| Dead bird (slaughtered at market) | 152 (19; 16–21) | 136 (45; 40–51) | 50 (10; 7–12) | 70 (33; 27–40) | |
| Live bird (slaughtered at home) | 652 (79; 77–82) | 167 (56; 50–61) | 484 (92; 90–94) | 136 (65; 58–71) | |
*HPAI, highly pathogenic avian influenza. †Two-sided χ2 test of significance compared with baseline data had p value of <0.0001, except as noted. ‡p = 0.0002. §p = 0.013. ¶p = 0.049.