“…Some also mentioned that participants believed insufficient testing of the vaccine meant there were too many uncertainties around long-term effectiveness of the vaccine [107,109,112,113,119,131]. Some studies reported beliefs that children are too young to receive the HPV vaccine [104,107,118,119,121,122,126], and fears of a ''sexually transmitted infection vaccine" leading to unsafe sexual behaviours and increased promiscuity [107,110,117,121,124,125,130]. Some also discussed personal values or faith issues [104,110,122], and others the difficulty of talking about a ''sex vaccine" [110,112,117,132].…”