Abstract
Objective: The present article aimed to identify the vaccination status of adolescents from the attached area of a Basic Family Health Unit in a city in the State of Piauí. Methods: This is a sectional study with a quantitative approach, developed through a household survey, from April to July 2017. The sample consisted of 361 adolescents and the analysis was performed using descriptive statistics. Results: It was found that vaccination coverage against rubella, measles and mumps accounted for 42.7% of adolescents, diphtheria and tetanus (31.9%), hepatitis-B, 42.1% coverage was observed, while 43.2% of the adolescents were vaccinated against yellow fever and 21.1% against HPV. It is noted that approximately 50% of the interviewees are unaware of the existence of a vaccine card of the adolescent and that 58.8% of the adolescents did not know to inform against which diseases they were immunized. Conclusion: It is concluded that the knowledge of the adolescents is incipient in relation to the immunization, highlighting, thus, the necessity of carrying out educative actions by the health professionals in partnership with the schools.