- Raffaeli G, Cavallaro G, Pugni L, Leva E, Artoni A, Neri S, et al. Severe Pneumonia Caused by Influenza A (H1N1) Virus Successfully Managed with Extracorporeal Life Support in a Comorbid Former Preterm Infant. Int J Environ Res Public Health. 2017;14: pubmed publisher..To our knowledge, this is the first report on the use of ECLS in a formerly preterm infant, suffering from NEC complicated by influenza A (H1N1) virus infection. ..