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. 2013 Oct 7;9:196. doi: 10.1186/1746-6148-9-196

Table 1.

Isolation and identification of AIV type A from cloacal swabs during the period of December’2009 to February’2012

Winter season Division Wintering sites Total no. of sample No. of HA positive samples No. of NDV positive samples No. of AIV positive cases in NDV positive samples RT-PCR positive samples of AIV Prevalence of AIV (%) Seasonal prevalence (%)
 
Sylhet
Hakaluki Haor
450
278
126
19 (15.05)*
146
32.44
26.89
Dec. 2009 to Feb. 2010
 
Tanguar Haor
225
94
52
6 (11.54)
51
22.67
 
Dhaka
Jahangirnagar Lake
225
73
37
4 (10.81)
45
20.00
 
Sylhet
Hakaluki Haor
300
145
75
7 (9.33)
63
21.00
18.50
Dec. 2010 to Feb. 2011
 
Tanguar Haor
150
64
39
3 (7.69)
27
18.00
 
Dhaka
Jahangirnagar Lake
150
58
23
2 (8.69)
21
14.00
 
Sylhet
Hakaluki Haor
300
163
75
5 (6.67)
58
19.33
18.33
Dec. 2011 to Feb. 2012
 
Tanguar Haor
150
71
37
2 (5.41)
23
15.33
 
Dhaka
Jahangirnagar Lake
150
73
41
2 (4.88)
29
19.33
Total     2100 1019 505 50 (9.90%) 463 22.05  

A total of 2100 cloacal swab samples from semi-scavenging domestic ducks were tested for virus isolation through chicken embryo inoculation following by Haemagglutination test and identification was confirmed by RT-PCR from HA positive samples (allantoic fluid).

*Values in the parenthesis indicates per cent positive.