Viruses and asthma: Inception, exacerbation, and possible prevention

Area of Science:

• Pediatric Allergy and Immunology
• Respiratory Medicine
• Infectious Diseases

Background:

• Viral respiratory infections are linked to asthma development and exacerbations in children.
• Asthma exacerbations are often triggered by viral infections, leading to increased healthcare utilization.
• The interplay between viral infections, allergic sensitization, and allergen exposure influences asthma severity.

Purpose of the Study:

• To review the epidemiological associations between viral respiratory infections and asthma.
• To discuss the role of viruses in the inception and exacerbation of childhood asthma.
• To explore the potential protective effects of certain infections against allergic respiratory diseases.

Main Methods:

• Literature review of epidemiological studies and clinical observations.
• Analysis of the pathogenesis of viral-induced asthma.
• Discussion of treatment implications for childhood asthma.

Main Results:

• Viruses are implicated in the initial development of the asthmatic phenotype in infancy.
• Viral infections significantly contribute to acute asthma exacerbations in children with established asthma.
• Some viral infections may paradoxically prevent the development of allergic respiratory diseases, including asthma.

Conclusions:

• Viral respiratory infections play a multifaceted role in childhood asthma, influencing its onset, progression, and potentially offering protection.
• Understanding these complex interactions is crucial for developing effective prevention and treatment strategies for pediatric asthma.
• Further research into the mechanisms underlying these associations can lead to novel therapeutic approaches.