A new study published in Clinical Rheumatology exposes how vaccine manufacturers used phony placebos in clinical trials to conceal a wide range of devastating risks associated with HPV vaccines. Instead of using genuine inert placebos and comparing health impacts over a number of years, as is required for most new drug approvals, Merck and GlaxoSmithKline spiked their placebos with a neurotoxic aluminum adjuvant and cut observation periods to a matter of months.