We reported previously three cases of patients chronically infected with a unique rhinovirus strain [8] . Since then, we have identified two additional similar cases. All five patients were immunocompromised lung transplant recipients infected both in the URT and LRT (Table 1) . Three were infected with a HRV-A species (HRV-A64, -A24 and -A9), and two with a HRV-B species (HRV-B3 and -B27).