[The detection of the influenza virus in the small intestine in diarrhea in piglets]. / Obnaruzhenie virusa grippa v tonkoi kishke pri diaree porosiat.

Electron microscopy used for examinations of small intestine suspensions of piglets in the prenatal and postnatal periods allowed influenza virions to be identified in virus population. An attempt was made to preserve the discovered population in alternating animal--cell culture--animal passages. Serological examinations of the swine herd confirmed the circulation of influenza viruses in the herd.