Which high-risk factor may lead to serious complications from influenza in adults and children?

Individuals with asthma are considered to have a high-risk factor for serious complications from influenza. Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, which can be exacerbated during viral infections such as influenza. When influenza infects a person with asthma, it can trigger severe asthma attacks, increase respiratory distress, and lead to pneumonia or other complications due to the heightened sensitivity of their airways. This population already has compromised respiratory function, making them more vulnerable to the adverse effects of respiratory viral infections.

Other conditions such as hypertension, anorexia, and major depressive disorder may impact overall health but do not directly increase the risk of severe respiratory complications caused by influenza in the same way that asthma does. While they may contribute to a person's overall health status and resilience in combating infections, they do not specifically heighten the risk of complications resulting from influenza. This underscores the critical need for vaccination and tailored management strategies for patients with asthma during flu season.