Analysis of the epidemiological situation of pertussis in the region of Granada (Spain) during 2023-2024 season

Introduction: the incidence of pertussis has experienced a sudden increase during the years 2023 and 2024, surpassing in numbers the outbreak occurred in 2015. The main objective of this study is to analyse the epidemiological situation of pertussis and vaccination coverage against it in children in the province of Granada (Spain) during 2023 and 2024.

Material and methods: a descriptive retrospective study of the epidemiological situation of pertussis in the province of Granada was conducted based on the declarations made in the Andalusian Epidemiological Surveillance System (SVEA) during 2023 and until the 15th epidemiological week of 2024.

Results: a total of 809 cases of pertussis were reported in the province of Granada during the study period. The age group with the highest number of cases was children aged 11-15 years, with 253 reported cases, followed by children aged 1-5 years. The vaccination coverage rate in children aged 11 to 15 years was 91%.

Conclusions: most of the cases occurred in school-aged children with a complete vaccination schedule, and no deaths were reported. The clinical course of children under 1 year of age who required hospitalization (29.6%) was favourable in all cases.