Initially I thought this as well.
In reality traditional vaccine safety testing often only lasts a few weeks and involves a small number of people, the 'placebo' is usually a different type of vaccine so as to make the new product look relatively inert.
In reality traditional vaccine safety testing often only lasts a few weeks and involves a small number of people, the 'placebo' is usually a different type of vaccine so as to make the new product look relatively inert.
Initially I thought this as well.
In reality traditional vaccine safety testing often only lasts a few weeks and involves a small number of people, the 'placebo' is usually a different type of vaccine so as to make the new product look relatively inert.