According to a report on Alternet, homeopathy was more effective than a vaccine during the 1918 flu epidemic: (Flu). The one issue that isn’t addressed in the claim that, “Homeopathy may be more effective than flu shots” is that during the deadly flu outbreak of 1918, those patients who could have afforded to be treated with homeopathy would have been the idle rich who would like have retired to their country homes because of the Great War anyway and would not only have had a better diet, but a reduced risk of exposure.
Check out their coverage there are dozens of comments from posters pointing out dozens of other flaws in their argument.
For a relatively rational perspective on homeopathy, read my article – Homeopathy – all in the mind?