High prevalence and pathogen-specific variations of co-infections in pediatric adenovirus pneumonia: a retrospective epidemiological analysis from Northern China

Adenovirus pneumonia in children in this region exhibits a high rate of co-infections, predominantly bacterial (especially Streptococcus pneumoniae and Haemophilus influenzae), followed by viral (rhinovirus, influenza, parainfluenza, RSV) and Mycoplasma pneumoniae. Co-infection profiles vary by gender, age, and season. Timely identification of co-pathogens is critical for guiding rational antimicrobial use and improving prognosis.