屠宰場仿土雞血清之家禽流行性感冒流行病學調查分析

Serologic Survey for Avian Influenza in Native Hybrid Chickens from Slaughter Houses

楊平政(Ping-Cheng Yang) ； 黃元品(Yuan-Pin Huang) ； 王金和(Ching-Ho Wang)

《臺灣獸醫學雜誌》 32卷1期 (2006/03) Pp. 24-29

https://doi.org/10.7009/TVJ.200603.0024

摘要

2004年1月彰化首次發生H5N2禽流感後，為探求之後的血清流行病學，自2月起依北、中、南飼養土雞場數目分配採樣數目，於屠宰場採血後測定禽流感抗體。 由2月至4月共採62場雞隻血清，每場以系統抽樣，採取14個以上血清樣本，先以ELISA測定，抗體陽性者，再以HI測定H5及H6的抗體，結果H5抗體率：中、南區分別為68％、41％。2003年3月以前的雞血清H5抗體陽性率為0%。2004年2月至4月測得H5抗體陽性，顯示其為新發生例，於2004年8-10月（夏季）、2004年11月至2005年1月（秋冬）期間，再度檢測北、中、南區雞群，採樣結果：夏季雞隻血清H5抗體降為0%，秋冬血清再轉為自8%，這顯示H5抗體陽性率已經減少並且會受天氣影響而變化。

關鍵字

禽流感 ； H5 ； H6 ； 抗體

並列摘要

Since the avian influenza outbreak of H5N2 subtype in Changhua in January, 2004, the information about the sero-epidemiology of H5N2 subtype and the infection status of H5 subtype before this outbreak is needed for the policy decision. This study is to collect the sera from slaughter houses for detection of antibody against avian influenza by ELISA, and then to determine the HA subtype (H5, H6) with hemagglutination inhibition test. The flock sampling numbers were determined according to the flock numbers in different geographical areas (north, central, and south). There were total three sampling periods in this study. In the first period, February to April in 2004, the positive rates of H5 antibody in central and south areas were 68%, and 41%, respectively (no samples from north area). The sera collected before March, 2003 were negative for H5 antibody. It meant that the outbreak during February to April in 2004 was a new case. The H5 antibody rate declined to 0% in the second period, August to October, and rose to 8% in the third period, November to January in the next year. It showed that the positive rate of H5 antibody was declined and changed with the shift in weather.

並列關鍵字

avian influenza ； H5 ； H6 ； antibody