2. Persistence of Equine Herpesviruses in Experimentally Infected Horses and the Experimental Induction of Abortion

Abstract

An 8‐month‐old filly (No. 2) developed an acute vulvo‐vaginitis and respiratory disease following inoculation of equine herpesvirus (EH virus) type 1 (EH 39 virus; equine rhinopneumonitis virus) into the vestibule of the vagina. The same virus produced acute respiratory disease but not balanoposthitis following intranasal, intravenous and intrapreputial inoculation of a 12‐month‐old colt (No. 3). A second 8‐month‐old filly (No. 1) developed a mild respiratory disease but not vulvo‐vaginitis following intravestibular inoculation of EH 39 virus. EH viruses that were slowly cytopathic for equine foetal kidney cell cultures and serologically unrelated to the inoculated EH 39 virus were isolated ..