Adult alpaca case report highlights systemic toxoplasmosis
An adult alpaca with three days of sternal recumbency before death was found at necropsy to have systemic toxoplasmosis, according to a new Journal of Veterinary Diagnostic Investigation case report by Cecilia Degiovanni and Arnaud J. Van Wettere. The 11-year-old female had hydrothorax, ascites, hepatomegaly, fibrinous pleuritis, cranioventral bronchopneumonia, pulmonary atelectasis, and firm thoracic and abdominal fat, with histopathology showing chronic lymphocytic and histiocytic hepatitis, necrosis, portal-to-portal bridging fibrosis, thrombosis in adipose tissue, and fibrinosuppurative inflammation. The report stands out because clinical toxoplasmosis is considered uncommon in camelids, and published alpaca reports have more often involved fetal loss or younger animals rather than fatal disseminated disease in an adult. (deepdyve.com)
Why it matters: For veterinary professionals, the case is a reminder to keep Toxoplasma gondii on the differential list for adult camelids with recumbency, respiratory compromise, effusions, hepatic lesions, or multisystemic disease, especially when necropsy reveals widespread inflammation and thrombosis. Broader literature suggests camelids are regularly exposed to T. gondii—a 2021 meta-analysis found pooled seroprevalence across Camelidae of 28.16%—even though overt disease appears to be reported far less often than exposure. That gap matters for herd health, reproductive risk, biosecurity, and communication with pet parents about limiting feed and pasture contamination from felids. And more generally, it fits a wider trend in alpaca medicine: baseline species-specific reference data are still being built, as shown by recent imaging work mapping normal alpaca nasal cavity and paranasal sinus anatomy with CT, MRI, cross-sections, and 3D rendering. (pubmed.ncbi.nlm.nih.gov)
What to watch: Watch for follow-up discussion on whether this case changes how pathologists and camelid clinicians work up adult alpacas with unexplained recumbency, liver disease, serosal effusions, or suspected systemic protozoal infection. More broadly, continued publication of alpaca-specific anatomic and diagnostic reference studies—including CT/MRI descriptions showing dorsal and middle conchal, maxillary, frontal, and ethmoidal sinuses, frequent sphenoidal sinuses, occasional lacrimal sinuses, and absence of ventral conchal and palatine sinuses in examined heads—could make future imaging and postmortem interpretation more precise in this species. (deepdyve.com)