VACCINE AND PROCESS FOR ITS PREPARATION

摘要

A vaccine for protecting swine against transmissible gastroenteritis (TGE) is prepared from a specific antigenic protein (SPA) obtained by separation from TGE virus. The SPA is characterized by the buoyant density of 1.02 to 1.03 gm/ml in a solution of sucrose and an Rf value of approximately 1.84 relative to human serum albumin. The vaccine may be prepared in parenteral dose form for administration to pregnant sows, thereby effectively protecting the baby pigs against fatal TGE infection.