A descriptive analytical study was conducted using available secondary data from Saadah governorate of pertussis that was obtained by the electronic Integrated Disease Early Warning System (eIDEWS) in 2021. All cases were identified by using the clinical standard case definition of pertussis adopted by WHO. Variables for demographic information, clinical, vaccination status, and outcome were included. Population from Central Statistical Organization was used for calculating the incidence rate (IR) per 100,00 population, P-Value ≤ 0.05 is considered statistically significant