Experimental ocular chlamydial studies in lambs

Two locally isolated strains of Chlamydia psittaci from sheep and cattle and a Bour strain of Chlamydia trachomatis were instilled onto conjunctiva of 6 lambs. Clinical and laboratory investigations were carried out till 52 day post inoculation. Bour strain did not infect the conjunctiva of lambs. Pannus or keratitis was neither observed with human nor animal strains. Laboratory studies which included reisolation, fluorescent staining, cytology and serology were negative throughout with Bour strain while positive at one time or the other with 2 C. psittaci strains during the period of study.