Human parainfluenza viruses (HPIV 1–3) cause a broad spectrum of respiratory diseases – notably croup, tracheobronchitis, bronchiolitis, and pneumonia in children. Inclusion of HPIV 1–3 is important because they account for a large fraction of pediatric respiratory hospitalizations (croup, bronchiolitis, pneumonia) each year (Elboukari H, Ashraf M 2023, Charlton et al. 2018).
Elboukari H, Ashraf M. Parainfluenza Virus. [Updated 2023 Jul 17]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK560719/
Charlton, C. L., Babady, E., Ginocchio, C. C., Hatchette, T. F., Jerris, R. C., Li, Y., Loeffelholz, M., McCarter, Y. S., Miller, M. B., Novak-Weekley, S., Schuetz, A. N., Tang, Y. W., Widen, R., & Drews, S. J. (2018). Practical Guidance for Clinical Microbiology Laboratories: Viruses Causing Acute Respiratory Tract Infections. Clinical microbiology reviews, 32(1), e00042-18. https://doi.org/10.1128/CMR.00042-18