The most common reason not to vaccinate, the report found, is the fear of side-effects.
With this in mind, one woman whose life was devastatingly changed as a direct result of a vaccine is encouraging parents to vaccinate their children anyway.
A thread that made the rounds last year has been unearthed once more in light of the debate surrounding the importance of vaccines.
A woman called Tiffany Yonts received the tetanus and diphtheria vaccine as part of a routine check-up when she was 14-years-old.
However, she developed an untreatable autoimmune disease called Guillain-Barre Syndrome (GBS), which is listed as a one-in-a-million side effect.
GBS is a rare disorder that makes the body attack itself, resulting in an immune system response that causes damage to peripheral nerves. This impacts a whole host of other systems in the body, and can disrupt movement, cause muscle weakness, paralysis and make it hard to breath.
Tiffany, who was a competitive swimmer and had to give up the sport after the painful diagnosis a year after she got the vaccine, experienced most of these symptoms.
She's still firmly pro-vaccines.
Read her story, below:
my arm tripled in size from the injection & was very painful. i started to have trouble breathing. then most of the… https://t.co/R1JG3UYgVO
As her thread is once more shared across the internet, one person wrote:
Not all heroes wear capes, thank you for sharing your story!
Tiffany took to Twitter to answer more questions about her illness, and she wrote:
i have told my story as truthfully as i can. i've done years & years of research on my condition. & it's true that there's still very little known about gbs. i fully admit that. but i've stuck to current scientific opinion.