Javier Carbone,Marisa di Natale,Magdalena Salcedo,Mario Romero,Rosalia Laporta,María Carreño,Elizabeth Sarmiento, Mucosal Bacterial Immunotherapy in Solid Organ Recipients with Recurrent Respiratory Tract Infections: Case Report Transplantation Case Reports 2020 2733-2527 http://dx.doi.org/10.31487/j.TCR.2020.02.07 https://www.sciencerepository.org/mucosal-bacterial-immunotherapy-in-solid-organ-recipients-with-recurrent_TCR-2020-2-107 Abstract: Bacterial infections are the most frequent infectious complications among solid organ recipients. These complications are associated with a high morbidity and mortality, despite recent advances in antimicrobial prophylaxis in the transplant setting. New therapeutic modalities are warranted. We present here a retrospective study based on medical records review of 2 solid organ recipients that were treated with mucosal bacterial immunotherapy because of recurrent bacterial respiratory infections long time after transplantation. A successful decrease of the frequency of bacterial respiratory infections during a period of up to 8 years was observed in one of the patients. We suggest that clinical trials in this field are warranted. Keywords: Case report, mucosal bacterial immunotherapy, transplantation, recurrent bacterial infections