Is there enough evidence to support the policy of immunising people against seasonal flu?

BBC News reports the claim of an expert, Tom Jefferson, in the British Medical Journal, that there is not enough evidence to support the policy of immunising people against seasonal flu. Mr Jefferson, who works for the Cochrane Library, a body that determines the relative effectiveness of health interventions, has found that flu vaccines have "little or no effect on many influenza campaign objectives such as hospital stay, time off work, or death from influenza and its complications." He believes a re-evaluation of the evidence is urgently necessary, in view of the financial cost to the taxpayer of flu campaigns.

My own concerns about vaccines, as about other prescribed pharmaceutical medications, are about their safety and ubiquity, as well as their effectiveness or otherwise. When pharmaceutical drugs do harm patients, as they so very often do, this costs the drug companies so little financially or in any other way, that there is little to spur them into ensuring the safety of their products. See Drug firms dodge swine flu liability

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