Respiratory syncytial virus--a comprehensive review

Area of Science:

• Pediatric infectious diseases
• Immunology
• Respiratory medicine

Background:

• Respiratory syncytial virus (RSV) is a leading cause of childhood morbidity and mortality.
• Despite extensive research, a safe and effective RSV vaccine remains unavailable.
• RSV infection is characterized by acute bronchiolitis and airway inflammation.

Purpose of the Study:

• To review the current understanding of RSV infection, including epidemiology, pathology, and animal models.
• To explore the association between RSV hospitalization in early life and the subsequent development of asthma.
• To identify research gaps in understanding RSV's role in asthma pathogenesis.

Main Methods:

• Literature review of RSV epidemiology, clinical manifestations, diagnostics, and immunobiology.
• Analysis of studies on animal models, particularly the bovine model.
• Examination of research on genetic susceptibility and inflammatory responses in RSV-associated asthma.

Main Results:

• RSV has a single serotype with two subtypes (A and B) and distinct seasonality.
• Bovine and murine models offer insights into human RSV disease.
• A significant correlation exists between infant RSV hospitalization and higher asthma prevalence.

Conclusions:

• The link between RSV infection and asthma development may involve inflammatory pathways and atopic predisposition.
• Further research is needed to elucidate the relationship between RSV bronchiolitis, viral-induced inflammation, and asthma.
• Development of RSV vaccines and antiviral agents is ongoing, alongside studies on co-infection and natural history.