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ASX ANNOUNCEMENT
Imugene avian influenza vaccine trial update
17 January 2007, Sydney, Australia: Imugene Limited (ASX:IMU) today confirmed the efficacy trials for its new avian influenza vaccine candidates for poultry had progressed to the challenge phase.
Since our most recent update, the chickens, other than the control group, have been successfully vaccinated in accordance with the trial protocol.
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suc·cess·ful

Having a favorable outcome: Having obtained something desired or intended: was successful in stopping the leak of oil.
Having achieved wealth or eminence:

vac·ci·nate

To inoculate with a vaccine in order to produce immunity to an infectious disease.

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if it was otherwise it would have said ; "the vaccine candidates have been successfully administered"