2005年8月6日,美国国立变态反应和传染病研究院宣布对正在研制的预防人类感染H5N1禽流感的疫苗的最初临床试验结果。初步资料表明,试验疫苗可诱导小群健康成人的免疫应答。虽然还需要更多的试验,但新的结果再次证实研制特异性H5N1疫苗的可行性。目前认为H5N1是引起下一次大流行 On August 6, 2005, the National Institute of Allergy and Infectious Diseases announced initial clinical trial results of a vaccine being developed to prevent H5N1 bird flu in humans. Preliminary data suggest that the test vaccine induces an immune response in a small group of healthy adults. Although more trials are needed, the new results confirm once again the feasibility of developing a specific H5N1 vaccine. H5N1 is currently believed to cause the next pandemic