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" A vaccine capable of immunising recipients against the H5N1 bird flu virus and being manufactured on a large-scale has been developed by Chinese scientists. Researchers from Beijing-based Chinese pharmaceutical company Sinovac Biotech claim to have developed the &amp;quot;safe and effective&amp;quot; vaccine which could be used to help large numbers of people in the event of an outbreak of bird flu among humans. The scientists, publishing details of their work in today&amp;#039;s online edition of the Lancet, built on the early work of previous trials which had prepared a vaccine tackling a part of the H5N1 strain. They tested several variants on a new alternative which uses a trace of the entire virus, a more effective sample for the immune system to fight against, before finding that two doses of a ten microgram sample were sufficient to provide full immunity against the strain. Although the side-effects from the vaccine include pain, swelling and fever, the vaccine&amp;#039;s developers believe it to be valuable because they say it could be developed on a mass scale. &amp;quot;During a pandemic, the demand for influenza vaccines will far outstrip the manufacturing capacity of such vaccines, a situation that has led to [the] World Health Organisation encouraging investigation into dose-sparing strategies, including the use of adjuvants and whole-virion vaccine,&amp;quot; Weidong Yin, the vaccine&amp;#039;s developer, comments. &amp;quot;Our trial suggests that an H5N1 vaccine manufactured and formulated with both of these approaches is well tolerated and immunogenic.&amp;quot; \u00A9 Adfero Ltd "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.netdoctor.co.uk/healthy-living/news/a14182/bird-flu-vaccine-breakthrough/>