The vaccines used in this study are Gardasil-9® (for HPV) and Havrix® (for hepatitis A). Both are safe and approved for use in Canada.
Potential side effects include pain, swelling, itching, bruising, and redness at the site of injection; fever, nausea, dizziness, headache, vomiting, irritability, drowsiness, and loss of appetite.
Participants will be monitored for severe adverse reactions and referred for appropriate care.