Novel avian metapneumovirus subtype C variant is a newly emerged pathogen causing hydrosalpinx fluid syndrome in Sheldrake ducks in China.

ABSTRACT: Since 2021, an epidemic disease characterized with hydrosalpinx fluid syndrome (HFS) has been circulating in the laying Sheldrake ducks in China, which seriously endangers the healthy development of the duck industry. The causative agent of this disease has been traced to avian metapneumovirus subtype C (aMPV/C), known to cause acute upper respiratory tract infections and egg-drop in poultry. To date, no reports have been made to isolate and characterize aMPV/C infection in Sheldrake ducks in China. Here, a strain of virus, designated aMPV-FJ21, was successfully isolated from the diseased ducks exhibiting HFS. Transmission electron microscopy revealed that the virus is an enveloped particle exhibiting a spherical or pleomorphic morphology. Indirect immunofluorescence assays demonstrated th

SUBMITTER: Fu QL 

PROVIDER: S-EPMC12667670 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature