Given the task definition and input, reply with output. Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

Costs were not mentioned, but since the story is about an early vaccine trial (one that showed the vaccine to have less than desirable effectiveness), we think cost is not applicable in this case. The benefit of treatment, immune responsiveness to bird flu, was accurately reported as occurring in 54% of those receiving the highest dose of the vaccine administered. In presenting the lack of harms associated with even the high doses of antigen needed to trigger the desired immune response, the article included an important caveat about elderly individuals typically faring worse than the healthy young people tested. This article did a good job of summarizing the results of the current study that 54% of those getting the highest dose appeared to mount an immune response to this strain of flu as compared with 75-90% of those receiving typical winter-flu vaccine having a similar immune response (and at a dose that is 12 times lower than that needed to attain this level of immunity with bird-flu). In some ways this story avoided a hysterical tone when discussing a possible bird flu pandemic. But it did include a picture of workers in hazmat suits and if offered the calculation that with the current iteration of vaccine it would be possible to fully immunize a mere 1.25% of the population when a portion of that population has never been vaccinated against the flu. This threw off the otherwise well-maintained balance of the report on this potential public health issue. Quotes from an accompanying editorial, a member of the panel monitoring the vaccine's safety and the head of National Institute of Allergy and Infectious Disease of the National Institutes of Health augment the information presented in the article in the New England Journal of Medicine upon which the story was based. The article mentions ongoing studies with the goal of improving the vaccine so that protection against bird flu could be accomplished with loser doses. This article reported on what it terms 'the first human testing' of vaccine against the bird flu. While mentioning other studies underway, and not explicitly stating that this vaccine is not currently available to the public, a thread throughout the piece made it clear that vaccine against this strain of flu was still a work in progress. This article reported on the efficacy of the first vaccine against the bird flu which has been added to the nation's vaccine stockpile. Does not appear to rely solely or largely on a press release.
1st Bird-Flu Vaccine Only Partly Effective