"About half of doctors' fridges are set at the wrong temperature, putting vaccines at risk, a study shows.
The five-year study showed a quarter of GPs fridges reached freezing point, ruining vaccines against polio, hepatitis and influenza.  Many GPs weren't aware vaccines could become ineffective if frozen, researchers said.
The study by Central Coast Public Health Unit researchers, was published in the ANZ Journal of Public Health."
Herald Sun, Melb. Jan 31st, 2002, pp5.

These findings would raise the questions of just how scientific vaccination campaigns are, what would the results have been with correct refrigeration, and given the faulty doses - was the efficacy really as good as claimed by proponents of vaccination? Then again, have adequate studies as to efficacy ever been carried out?