Not only mercury, but aluminum adjuvant is a huge problem in vaccines. It’s implicated in allergies, autism, autoimmune disorders, and Alzheimer’s. Amount of aluminum is 500mcg in Gardasil 9.
Allergy epidemic caused by vaccines (2015):
http://www.omicsgroup.org/
Allergens in vaccines (including milk, egg, chicken, beef, dog, latex, etc–and human DNA… long term effects have never been studied)
http://www.vaccinesafety.edu/
Aluminum+food proteins CREATE ALLERGENS IN LAB MAMMALS (for the study of allergies!), section 7 paragraphs 4 and 6
http://www.hindawi.com/
Additional article:
Are Vaccinations Safe for Children with Allergies? http://ow.ly/CSGA30883Yq