For people with asthma and other underlying conditions, it's particularly important to get vaccinated when the vaccine becomes available ... If you have fever and cough, get treated promptly. People with asthma account for about one-third of all people hospitalized with H1N1. We know that only half of people with asthma, when they get sick with flu, sought care from a medical provider. If you have asthma or other underlying conditions, seek care promptly.