Introduction: Because the antibody neutralizing respiratory syncytial virus (anti-RSV) has a short period of immunization and high cost, the identification of regions and months of highest occurrence of bronchiolitis is very important.
Methods: An Autoregressive Conditional Poisson model was constructed for count data and compared to the standard time-series Poisson regression model.
Results: The metropolitan area of Paraná presented the highest average occurrence from May to July.
Conclusions: The constructed model presented a better fit and allowed prediction of when and where the bronchiolitis hospitalizations are distributed.