Children who have chronic medical issues may have a higher likelihood of experiencing serious consequences associated with illnesses that can be prevented by vaccines. Hence, it is advisable to administer extra booster doses or supplemental vaccinations to healthy youngsters, in addition to the regular immunization regimen. This paper aimed to examine the attitudes, knowledge, and behaviors of physicians and parents on extra vaccines for children with chronic diseases. The vaccination coverage for compulsory vaccines was similar to that of the whole population. Nevertheless, there was a limited rate of immunization for certain vaccinations. Hence, the implementation of strategies to prioritize pediatric vaccinations and enhance healthcare professionals' understanding of the significance of medical recommendations regarding specific vaccines for children with chronic illnesses might effectively enhance vaccination rates.