Ital J Pediatr. 2025 Nov 14;51(1):302. doi: 10.1186/s13052-025-02129-x.
ABSTRACT
BACKGROUND: To investigate the characteristics of co-infection pathogen profiles in children with adenovirus pneumonia and provide guidance for clinical diagnosis and rational treatment.
METHODS: A retrospective analysis was conducted on the etiological results of co-infections in children hospitalized with adenovirus pneumonia in the Respiratory Department of Hebei Children’s Hospital from January 1, 2024, to December 31, 2024. Differences in co-infections across genders, age groups, and seasons were analyzed.
RESULTS: Among 5,373 children hospitalized with community-acquired pneumonia, 330 cases (6.1%) were diagnosed with adenovirus pneumonia, of which 310 (93.9%) exhibited co-infections. Bacterial co-infections predominated (70.0%, 231/330), with Streptococcus pneumoniae (45.2%), Haemophilus influenzae (40.9%), and Moraxella catarrhalis (2.7%) being among the most frequently detected, followed by Staphylococcus aureus (2.4%), Bordetella pertussis (2.1%), Pseudomonas aeruginosa, Enterobacter cloacae, and Streptococcus pyogenes. Viral co-infections were identified in 45.5% (150/330), primarily rhinovirus (26.4%), influenza A/B (7.3%), parainfluenza virus (5.8%), respiratory syncytial virus (RSV, 4.8%), metapneumovirus (4.5%), coronavirus (1.5%), and bocavirus (0.3%). Additionally, Mycoplasma pneumoniae co-infections accounted for 44.5% (147/330). Gender-specific analysis revealed significantly higher RSV co-infection rates in girls than boys (P < 0.05), with no notable gender disparities for other pathogens. Age-related differences showed higher bacterial co-infection rates in infants/toddlers compared to preschool/school-age groups (P < 0.05), where Streptococcus pneumoniae peaked in infants/toddlers, parainfluenza virus was most frequent in infants/toddlers, and Mycoplasma pneumoniae predominated in school-age children. Seasonally, co-infection rates remained consistent year-round, though RSV and influenza A/B peaked in winter, parainfluenza virus in summer, metapneumovirus was least detected in summer, and Mycoplasma pneumoniae exhibited the highest positivity in autumn and the lowest in spring.
CONCLUSION: 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.
PMID:41239512 | DOI:10.1186/s13052-025-02129-x
