Future reports from this cohort will help to clarify the complex relationship between infant respiratory viral infection severity, aetiology, atopic predisposition, and the development of early childhood asthma and other atopic diseases. Ultimately, this study, along with the companion TABS cohort, has the potential to provide new approaches to identify infants at high risk of developing early childhood asthma and allergic diseases, as well as provide important information that may contribute to the development of prevention strategies.  Eosinophilic infiltrate in a patient with severe Legionella pneumonia as a levofloxacin-related complication: a case report INTRODUCTION: Legionella pneumonia can appear with different levels of severity and it can often present with complications such as acute respiratory distress syndrome. CASE PRESENTATION: We report the case of a 44-year-old Caucasian man with Legionella pneumonia with successive development of severe acute respiratory distress syndrome. During his stay in intensive care the clinical and radiological situation of the previously observed acute respiratory distress syndrome unexpectedly worsened due to acute pulmonary eosinophilic infiltrate of iatrogenic origin. CONCLUSION: Levofloxacin treatment caused the occurrence of acute eosinophilic infiltrate. Diagnosis was possible following bronchoscopic examination using bronchoaspirate and transbronchial biopsy. Since the pneumonia epidemic that struck the delegates of the American Legion Convention in Philadelphia in 1976, Legionella spp. has become a relatively frequent cause of community acquired pneumonia [1] .