Para-influenza virus is common in the community and can cause severe and sometimes life-threatening pneumonias.  Patel et al, tested the novel drug DAS181 in transplant patients with such infections an report encouraging outcomes.

Salvatore et al, DAS181 for Treatment of Parainfluenza Virus Infections in Hematopoietic Stem Cell Transplant Recipients at a Single Center, Biology of Blood and Marrow Transplantation, February 2016.