Properties of a newly isolated, serologically distinct avian paramyxovirus.

The morphological, bio-physical and growth properties of the isolate duck/Hong Kong/D3/75 (D3/75) were consistent with this virus being a member of the paramyxovirus group. Using haemagglutination inhibition and neuraminidase inhibition tests no serological relationships between D3/75 and other paramyxoviruses could be demonstrated. The structural polypeptides of D3/75 were also typical of paramyxoviruses, consisting of 6--7 polypeptides ranging in molecular weight from 46,000--200,000 under reduced conditions. Two polypeptides were glycosylated.