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Volume 18, Number 12—December 2012

Letter

Controlling Highly Pathogenic Avian Influenza, Bangladesh

Shankar P. MondalComments to Author , David Tardif-Douglin, Robert Ryan-Silva, and Rich Magnani
Author affiliations: Development Alternatives Inc., Bethesda, Maryland, USA (S.P. Mondal, D. Tardif-Douglin, R. Ryan-Silva, R. Magnani); and University of Minnesota, St. Paul, Minnesota, USA (S.P. Mondal)

Main Article

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.

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