Which respiratory virus is commonly known to trigger asthma exacerbations?

The respiratory syncytial virus (RSV) is recognized for its significant role in respiratory infections, particularly in young children, and it can indeed trigger asthma exacerbations. RSV is particularly known for its ability to cause inflammation and hyper-reactivity in the airways, leading to increased asthma symptoms.

While RSV is crucial, the rhinovirus is one of the most common triggers for asthma exacerbations, especially in school-aged children and adults. Rhinovirus infections can provoke increased airway inflammation, resulting in worsened asthma control. Compared to other viruses listed, rhinovirus is often documented as a more frequent cause of asthma exacerbations due to its prevalence during the cold months when asthma patients often experience difficulties.

Influenza can also exacerbate asthma, particularly during the flu season, but its direct association as a common trigger is not as strong as that of rhinovirus. Parainfluenza virus can lead to upper respiratory infections that may induce asthma issues, yet it is less commonly noted as a significant trigger compared to rhinovirus.

While RSV has a well-established connection to respiratory disorders, rhinovirus is the most frequently cited virus responsible for initiating asthma attacks.