We used DAS181, a sialidase protein, to treat parainfluenza infection in 16 hematopoietic stem cell transplant patients
All patients presented with cough, 14 had dyspnea, 11 had hypoxia, and 8 had a fever
Nine patients had a complete response and 4 had a partial response to DAS181
The 3 patients without clinical response had coinfections with other pathogens
DAS181 was well tolerated with no major adverse events during therapy