Objective: Children in the 12-18 years age group are among the risky groups that can be affected by COVID-19 disease. Vaccination continues to protect against COVID-19 infection and prevent the spread of the virus. Despite this, some children suffer from Coronavirus disease. Therefore, it is also essential to know what they went through while they were sick. This study was conducted to determine the vaccination status of children between the ages of 12-18 years with the COVID-19 vaccine, the frequency of children with coronavirus disease, and symptoms in children with the disease.,Material and Methods: This study is a descriptive and cross-sectional study. This study was conducted in the province of Zonguldak, located in the Western Black Sea Region of Turkiye. Data were collected from parents of children studying in primary, secondary, and high schools. Five-hundred and fifteen parents participated in the study. The COVID-19 Information Form created via Google Forms was applied online to the parents in data collection. Statistical Package for Social Sciences (SPSS) 25.0 package program was used to analyze the data.,Results: It was determined that 44.6% of the children were vaccinated against COVID-19. It was determined that 68.8% of the children did not have COVID-19 disease. Among the reasons why children did not get vaccinated against COVID-19 were that 23.7% of their peers were not vaccinated, 41.3% did not trust the vaccine, 11.5% had a history of allergy, and 11.8% had Coronavirus disease. It was determined that the most common symptoms experienced in children when they contracted COVID-19 were headache, widespread pain, fever, cough, nasal congestion, loss of smell and taste, and diarrhea, respectively.,Conclusion: While almost half of the children were vaccinated with the COVID-19 vaccine, it was determined that the parents' vaccination status with the COVID-19 vaccine was relatively high. Children are not vaccinated because of a high mistrust rate against vaccination. Despite not being vaccinated, most children have not had Coronavirus disease either.