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Peer-reviewed veterinary case report

Two horses suddenly died from lung infection - what happened?

By Johnson, P J et al.·Published in The Veterinary record·1999·Department of Veterinary Medicine and Surgery, United States·View original on PubMed

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Original publication title: Sudden death of two horses associated with pulmonary aspergillosis.

Species:
horse

Plain-English summary

Two horses died suddenly due to a serious lung infection called pulmonary aspergillosis, which is caused by a fungus. One of the horses had just undergone surgery for intestinal problems and was recovering well, while the other was being treated for a neurological condition known as equine protozoal myeloencephalitis (EPM). Just before the first horse died, it showed signs of fever and was breathing faster than usual, but the second horse showed no warning signs of a lung infection. Unfortunately, both horses became very ill very quickly and passed away unexpectedly.

Abstract

The sudden death of two horses was attributed to the rapid and acute development of pulmonary aspergillosis. One horse was making excellent postoperative progress after a jejunal resection and anastomosis for intestinal adhesions. The other horse was being treated routinely for equine protozoal myeloencephalitis (EPM). Signs of fever and an increased respiratory rate were detected shortly before death in the first horse, but no premonitory clinical signs characteristic of pulmonary infection were detected in the horse being treated for EPM. Both horses developed rapidly debilitating, acute pulmonary mycosis and died unexpectedly.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/10452392/