Getting a flu vaccine during 2020-2021 is more important than ever because of the ongoing COVID-19 pandemic. Flu vaccination is especially important for people with certain underlying medical conditions, like asthma, heart disease, and diabetes. People with these types of conditions are at higher risk of developing serious complications from flu. Many of these conditions also increase the risk for serious outcomes from COVID-19.
People with asthma are at high risk of developing serious flu complications, even if their asthma is mild or their symptoms are well-controlled by medication. People with asthma can develop swollen and sensitive airways, and flu can cause further inflammation of the airways and lungs. Flu infections can trigger asthma attacks and a worsening of asthma symptoms. Flu also can lead to pneumonia and other acute respiratory diseases. In fact, adults and children with asthma are more likely to develop pneumonia after getting sick with flu than people who do not have asthma. Asthma is the most common medical condition among children hospitalized with flu and one of the more common medical conditions among hospitalized adults.