作者: Junping Li , Yongping Jiang , Shuangcheng Zhao , Xiaofei Chang , Jinxiong Liu
DOI: 10.1637/10150-040812-RESNOTE.1
关键词:
摘要: SUMMARY. Some H5N1 avian influenza viruses (AIVs) are lethal to quail; however, the use of inactivated vaccines in these birds is largely restricted because side effects caused by oil adjuvants. Here we evaluated protective efficacy a DNA vaccine against challenge with highly pathogenic virus (HPAIV) quail. Groups ten 3-wk-old quail were intramuscularly inoculated three times at 3-wk intervals 10, 15, 30, or 60 µg, respectively, plasmid pCAGGoptiHA, which expresses codon-optimized hemagglutinin gene A/goose/Guangdong/1/96 (GS/GD/96). The control group was phosphate-buffered saline. Hemagglutination-inhibition (HI) antibodies monitored every week after primary vaccination. challenged intranasally 105 EID50 heterologous HPAIV A/duck/Fujian/31/2007 (DK/FJ/31) (H5N1) 2 wk third inoculation. Oropharyngeal and cloacal swab specimens collected 3, 5, 7 days inoculation, ...