Contagious conjunctivo-keratitis (C.C.K.) of sheep in New Zealand

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Abstract
Extract An ophthalmia of sheep causing temporary blindness has been known to New Zealand shepherds since the beginning of this century, but Gill (cited by Coles, 1931 Coles, J. D. W. A. 1931. A rickettsia-like organism in the conjunctiva of sheep. Rep. vet. Res. S. Afr., 11: 175–186. [Google Scholar] ) appears to have been the first to accord the disease official recognition in this country. In a short report, founded on personal experience at Wallaceville, Hopkirk ( 1934 Hopkirk, C. S. M. 1934. Pink-eye in sheep. N.Z. J. Agric., 48: 224–225. [Google Scholar] ) described the clinical features of conjunctivitis, keratitis and pannus that have given rise to the popular name of “pink-eye”. Most sheep farmers have some acquaintance with the disease and they seem to find the appearance of the affected eye sufficiently characteristic to make a diagnosis with confidence.