Pneumonia by Aelurostrongylus abstrusus in a Leopardus tigrinus: Case study / Neumonía por Aelurostrongylus abstrusus en un Leopardus tigrinus: Estudio de caso / Pneumonia por Aelurostrongylus abstrusus em um Leopardus tigrinus: Estudo de caso

Abstract Anamnesis: A polytraumatized wild oncilla (Leopardus tigrinus) was admitted to Unidad de Rehabilitación y Rescate de Animales Silvestres (URRAS) veterinary clinic of Universidad Nacional de Colombia. Despite the medical efforts, the animal died six hours later. Clinical and laboratory findings: Necropsy examination revealed multiple white nodules of about 2 mm in diameter distributed on the visceral surface of lung caudal lobes. Histopathology revealed lymphoplasmacytic interstitial pneumonia with multiple coiled larvae of metastrongyloid nematodes in alveoli and bronchioles. First-stage Aelurostrongylus abstrusus nematode was identified in a fecal sample using the Ritchie copromicroscopic technique. Conclusion: This study reports an incidental severe pulmonary parasitism caused by A. abstrusus in a wild Oncilla (L. tigrinus). This is the first report of A. abstrusus infection associated with pathological lesions in a L. tigrinus from Colombia.

Resumen Anamnesis: Un tigrillo silvestre (Leopardus tigrinus) politraumatizado fue ingresado en la clínica veterinaria Unidad de Rehabilitación y Rescate de Animales Silvestres (URRAS) de la Universidad Nacional de Colombia, donde posteriormente falleció. Hallazgos clínicos y de laboratorio: el examen de necropsia reveló múltiples nódulos blancos de aproximadamente 2 mm de diámetro, distribuidos en la superficie visceral de los lóbulos caudales del pulmón. La histopatología reveló neumonía intersticial linfoplasmocítica, con múltiples larvas enrolladas de nematodos metastrongiloides en alvéolos y bronquiolos. En la muestra fecal postmortem se identificó el nematodo Aelurostrongylus abstrusus en primera etapa por la técnica copromicroscópica de Ritchie. Conclusión: Este estudio reporta un parasitismo pulmonar severo incidental causado por A. abstrusus en un tigrillo silvestre (L. tigrinus). Este es el primer reporte de infección por A. abstrusus asociada con lesiones patológicas en un L. tigrinus en Colombia.

Resumo Anamnese: Um Maracajá (Leopardus tigrinus) selvagem de vida livre foi internado na clínica veterinária Unidad de Rehabilitación y Rescate de Animales Silvestres (URRAS) da Universidad Nacional de Colombia devido a politraumatismo e o animal morreu. Achados clínicos e laboratoriais: O exame de necropsia revelou múltiplos nódulos brancos com cerca de 2 mm de diâmetro distribuídos na superfície visceral do pulmão dos lobos caudais. A histopatologia revelou pneumonia intersticial linfoplasmocitária com múltiplas larvas enroladas de nematóides metastrongilóides em alvéolos e bronquíolos. A amostra fecal post mortem para a técnica copromicroscópica de Ritchie permitiu a identificação do nematóide Aelurostrongylus abstrusus de primeiro estágio. Conclusão: Este estudo relata um grave parasitismo pulmonar incidental causado por A. abstrusus em um Maracajá selvagem de vida livre (L. tigrinus) da Colômbia. Este é o primeiro relato de infecção por A. abstrusus associada a lesões patológicas em L. tigrinus da Colômbia.

Larvoscopic study on Dictyocaulus sp. in the faeces of beef cattle in northeastern Brazil / Estudo larvoscópico de Dictyocaulus sp. em fezes de bovinos de corte do nordeste do Brasil

Abstract The lungworm Dictyocaulus viviparus has an important role in cattle health and productivity worldwide, since infections can lead to substantial economic losses. Despite its importance, few studies investigating the epidemiological aspects of infection by this parasite have been conducted. The aim of this study was to report the occurrence of lungworm infection in beef cattle herds reared in an area of livestock production in the northeastern region of Brazil. From September 2020 to August 2021, monthly fecal samples (n = 493) were collected from 46 beef cattle. Among all the animals assessed, lungworm larvae were detected in 8.7% (4/46). None of them presented any clinical sign suggestive of infection by lungworm parasites. Twenty larvae were retrieved, with the minimum number (n = 1) detected in October and December, and the maximum number (n = 13) in November. These presented a mean length of 363 μm (± 28.65 μm) and mean width of 19 μm (± 1.03 μm), and were morphologically similar to Dictyocaulus sp.. This study reports the occurrence of this parasite in this livestock production area. Lastly, local veterinarians need to be aware of inclusion of this parasite in the differential diagnosis of other respiratory infections in beef cattle.

Resumo O parasito pulmonar Dictyocaulus viviparus tem um papel importante na saúde e produtividade bovina em todo o mundo, uma vez que infecções podem levar a perdas econômicas. Além de sua importância, poucos estudos que investigam aspectos epidemiológicos das infecções por esse parasito têm sido realizados. Objetivou-se, nesta pesquisa, relatar a ocorrência de infecção por nematódeos pulmonares em rebanhos bovinos de corte, criados em uma importante área de produção pecuária, na região Nordeste do Brasil. De setembro de 2020 a agosto de 2021, foram coletadas, mensalmente, amostras fecais (n = 493) de 46 bovinos de corte. De todos os animais avaliados, larvas de nematódeos pulmonares foram detectadas em 8,7% (4/46). Os animais não apresentaram nenhum sinal clínico sugestivo de infecção por parasitos pulmonares. Vinte larvas foram recuperadas, com o número mínimo (n = 1) detectado em outubro e dezembro, e o número máximo (n = 13) em novembro. Apresentavam comprimento médio de 363 μm (± 28,65 μm), largura média de 19 μm (±1,03 μm) e eram morfologicamente semelhantes a Dictyocaulus sp.. Este estudo relata a ocorrência desse parasito nesta área. Logo, os veterinários locais devem estar atentos à inclusão desse parasito no diagnóstico diferencial de outras infecções respiratórias em bovinos de corte.

Angiostrongylus cantonensis in anterior chamber

Live worm in anterior chamber is a rare finding. We hereby report a case of ocular Angiostrongylus cantonensis, which, to the best of our knowledge, is the third case report from India. A 70-year-old female presented with the complaints of watering and foreign body sensations in right eye since 2 months. On examination, a translucent worm of approximately 15 mm length was found freely moving in anterior chamber. Patient underwent surgical removal of live worm, which was identified as A. cantonensis. Educating people regarding importance of hygiene is important for prevention of worm infestation.

Prevalence and distribution of angiostrongylus cantonensis (nematoda, angiostrongylidae) in achatina fulica (mollusca, gastropoda) in baixada santista, São Paulo, Brazil

ABSTRACT INTRODUCTION Angiostrongylus cantonensis is causes eosinophilic meningoencephalitis in humans. Worldwide expansion of this nematode is linked to the dispersion of their hosts. This study aimed to determine the prevalence of A. cantonensis infection in Achatina fulica in the nine municipalities that make up Baixada Santista, São Paulo, Brazil. METHODS Angiostrongylus cantonensis larvae were analyzed using optical microscopy. We performed polymerase chain reaction and restriction fragment length polymorphism using restriction endonuclease ClaI, directed to the internal transcribed spacer region 2 of A. cantonensis larval DNA. RESULTS Of the 540 snails analyzed, 117 (21.7%) were infected by A. cantonensis. For morphological and morphometric analyses, 60 larvae were used. Second-stage larvae were, on average, 358.2µm long and 26.4µm wide, while third-stage larvae were, on average, 450µm long and 21.12µm wide. The tails of the larvae ended in a fine tip. CONCLUSIONS All municipalities comprising Baixada Santista had A. fulica that were naturally infected with A. cantonensis. All of the observed characteristics were typical of the species.

Natural infection of Crenosoma vulpis (Nematoda: Crenosomatidae) in an urban Korean dog / 대한수의학회지

A male, 3.5 month old Pomeranian dog was diagnosed with a natural infection of Crenosoma (C.) vulpis in Daejeon, Korea. First stage larvae of C. vulpis were detected by fecal examination using the Baermann technique. Thoracic radiographs revealed mild, pervasive bronchial infiltration of the lung. Enumeration of larvae via the McMaster technique revealed 1,600 larvae per gram of feces. The dog was treated with mebendazole, and clinical symptoms were resolved 2 weeks post-treatment, as indicated by the subject presenting fecal tests negative for C. vulpis.