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Pig Journal Volume: 65
Publication date: June 2011

Case Studies

FIRST REPORTED CASES OF PNEUMOCYSTIS CARINII F. SP.SUIS DETECTED IN PORCINE LUNGS IN THE UK
A.E. COURTENAY, B.W.STRUGNELL, M.E.WESSELS

Abstract
Two cases are described in which Pneumocystis carinii (P.carinii) was demonstrated in the lungs of pigs. In case one, pigs were aged five weeks and from a 110 sow, farrow to finish herd on a mixed livestock farm. Porcine Circovirus Associated Disease (PCVAD) was concurrently present. In case two, the single affected pig was 12 weeks old and originated from a 450 sow, indoor, breeder finisher. Intercurrent disease was present in the form of gastric ulceration and Porcine Reproductive and Respiratory Syndrome virus (PRRSv).

Pneumocystis carinii, an ascomycetes fungus, has not been described in pigs in the UK before, although it has been recognised at least twice in the past through histological examination of pigs’ lungs by the Veterinary Laboratories Agency (VLA) (Robert Higgins, unpublished observations). The fungus has been identified elsewhere in normal and diseased pigs’ lungs.

Awareness of the appearance of the fungus in histological sections may lead to diagnosis of further cases and clarification of the clinical significance of the infection in UK pigs.

 
 
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