A Novel Host of an Emerging Disease: SARS-CoV-2 Infection in a Giant Anteater (Myrmecophaga tridactyla) Kept Under Clinical Care in Brazil.

A young male free-ranging giant anteater (Myrmecophaga tridactyla) was found with paralysis of pelvic limbs on a highway and kept under human care. Radiographs confirmed multiple incomplete fractures in the thoracolumbar vertebrae. Due to the poor prognosis, euthanasia was chosen. The infection was established by viral SARS-CoV-2 RNA detection in the rectal swab, spleen and kidney samples. Immunohistochemistry detected the viral nucleocapsid protein in sections of the lungs, liver, spleen, lymph nodes, and large intestine sections, and spike protein antigen in the lung tissue. Pilosa order species should be included as potential hosts of natural infection of SARS-CoV-2.

Case-control study evaluating the sow's risk factors associated with stillbirth piglets in Midwestern in Brazil.

Reproductive failure in swine herds is often difficult to diagnose and is important to swine production. The present study aims to identify the potential risk factors (infectious/noninfectious) for stillborn piglets in two commercial swine farms situated in midwestern region of Brazil. The potential risk factors were included in a multivariable logistic model, and the dependent variable was defined as the presence of at least one stillborn piglet in a given litter (yes or no). In the best fit model, two variables from the multivariable analysis, total litter size (p = 0.01), and average birth weight (p = 0.03) were significantly associated with the presence of stillborn piglets at the farms examined in this study. Porcine circovirus type 2 (PCV2) was detected in 29.1 % of the litters. Neither parvovirus (PPV) nor leptospirosis infections were identified in this study, suggesting that they have a minor impact on reproductive disease.

Spinal cord compression in cattle after the use of an oily vaccine / Compressão medular em bovinos após o uso de vacina oleosa

An outbreak of compressive myelopathy in cattle associated with the improper use of an oil vaccine is described. Neurological signs were observed in 25 out of 3,000 cattle after 60 days of being vaccinated against foot and mouth disease. The clinical picture was characterized by progressive paralysis of the hind limbs, difficulty in standing up, and sternal recumbency during the course of 2-5 months. A filling defect between the L1 and L3 vertebrae was seen through myelography performed in one of the affected animals. A yellow-gray, granular and irregular mass was observed in four necropsied animals involving the spinal nerve roots and epidural space of the lumbar (L1-L4) spinal cord; the mass was associated with a whitish oily fluid. This fluid was also found in association with necrosis of the longissimus dorsi muscle. Microscopic changes in the epidural space, nerve roots, and spinal musculature were similar and consisted of granulomas or pyogranulomas around circular unstained spaces (vacuoles). These spaces were located between areas of severe diffuse hyaline necrosis of muscle fibers and resembled the drops of oil present in the vaccine.

Relatamos um surto de mielopatia sas medulares e espaço epidural da região lombar (L1-L4); compressiva lombar em bovinos associada à aplicação de esse material era associado com líquido brancacento e vacina oleosa de forma inadequada. De um total de 3000 oleoso. Havia também áreas de necrose no músculo Lonbovinos, 25 apresentaram distúrbios neurológicos apro-gissimus dorsi com material similar ao do espaço epidural. ximadamente 60 dias após terem sido vacinados contra a Microscopicamente, as alterações observadas no espaço febre aftosa. O quadro clínico foi caracterizado por parali-epidural, raízes nervosas medulares e na musculatura fosia progressiva de membros posteriores, dificuldade para ram similares sendo caracterizadas pela formação de múlpermanecer em estação e decúbito esternal com evolução tiplos granulomas ou piogranulomas envolvendo espaços de 2-5 meses. A mielografia realizada em um animal reve-(vacúolos) circulares não corados (aparentemente, o local lou defeito de enchimento na altura das vértebras L1 e L3. antes ocupado por gotículas de óleo presente na vacina), Quatro animais foram necropsiados e foi visualizado massa além de necrose hialina severa difusa de fibras musculares.

Epidemiological and clinical aspects of the first outbreak of bovine mastitis caused by Prototheca zopfii in Goiás State, Brazil.

The purpose of this survey was to describe the occurrence of bovine mastitis caused by Prototheca zopfii in Goiás State, Brazil. Samples of milk, environment and udder were taken from a herd of 120 Holstein cows. Sabourauds dextrose agar plates were incubated under aerobic conditions at 37 degrees C/96 h, for microbiological analysis. Somatic cell count and milk composition were also determined. Histological sections from two udders were stained with HE and PAS. Prototheca zopfii was identified in six cows whose milk had a watery appearance. They also showed a pronounced decrease in milk yield, fat and lactose. Pronounced infiltration of mononuclear cells, atrophy of alveoli and fibrosis were observed. The presence of this agent in other herds in the State is highly likely.