What complication is most likely from skipping an influenza vaccination?

Skipping an influenza vaccination can lead to an increased risk of respiratory infections, which are particularly concerning for individuals with pre-existing conditions such as asthma. When individuals with asthma contract the influenza virus, it can trigger an exacerbation of their asthma symptoms due to increased respiratory inflammation and secretion, leading to difficulties in breathing, wheezing, and potentially severe asthma attacks. The flu is known for its capability to worsen underlying respiratory conditions, making those affected more susceptible to complications.

Although other complications listed, such as hearing loss, blindness, and pericarditis can occur in various medical contexts, they are not typically directly associated with influenza infection in the same manner as asthma exacerbations. Asthma patients have a clear link between the severity of influenza and potential worsening of their condition, which solidifies the importance of vaccination in preventing such complications.