Figure 1From: Viruses exacerbating chronic pulmonary disease: the role of immune modulation Consequences of virus infection in healthy individuals and asthmatics. Virus infection in non-asthmatics (left-hand panel) induces robust interferon and Th1 cell responses with rapid control of viral replication and minimal inflammation. In asthmatics (right-hand panel) impaired interferon and Th1 responses results in uncontrolled viral replication and an exaggerated inflammatory response.Back to article page