The present invention includes polypeptides, polynucleotides, antibodies, and vaccines associated with Runting Stunting Syndrome (RSS) in poultry. The present invention also includes diagnostic methods based on such polypeptides, polynucleotides, and antibodies and methods of protecting poultry, including chickens, against RSS by the administration of such polypeptides, polynucleotides, antibodies, and vaccines.
