“…The common refusal reasons are medical complications, pain from injections, previous measles infection, concerns about safety and effectiveness of vaccines, the ingredients in the vaccines, Parent's belief that it is unimportant for children's health, religious beliefs, or socioeconomic reasons, which were significantly contributed to non-vaccination (1,(11)(12)(13)(14)(15). In general, in most studies, fear of vaccine side effects was reported as the leading barrier to vaccination (1,12,13,(15)(16)(17).…”