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 28,634 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Five out of 6 foals between 2 and 4 months old, on a ranch in northern California, developed pneumonia within a 3 week period in June and July 1978. Corynebacterium equi was recovered from each of the 5 foals by transtracheal aspiration. Clinical signs were variable but included increased respiratory rate, fever, cough, nasal discharge, harsh airway sounds over middle sized airways and wheezing over small airways. Cyanosis was present in the most severely affected foal. Radiographic findings included diffusely increased interstitial and peribronchial densities, areas of consolidation and, in 3 cases, dense focal areas indicating abscessation. Foals were treated with several different antimicrobial agents. Most were treated with penicillin and gentamicin. Four of the 5 affected foals recovered within 2 to 3 weeks but the first foal to be affected died 2 days after first receiving veterinary attention. At postmortem examination, pulmonary changes considered typical of C equi pneumonia were found, including wet, heavy dark red lungs which failed to collapse and numerous 1 to 7 cm thin-walled abscesses throughout the parenchyma, containing inspissated exudate. C equi was cultured from the exudate. Samples of soil and dust from 9 of 20 areas inhabited by infected foals yielded C equi of the same serological group as found in the foals. Eight paddocks in which foals had not been kept were negative for C equi. The organism was recovered from cobwebs in the stalls occupied by infected foals. Aerosol infection via dust was considered to be the route of infection. Pharyngeal, vaginal and faecal cultures from the dams of 3 affected foals were negative for C equi. Early diagnosis by transtracheal aspiration and appropriate therapy are considered to be extremely important in the successful treatment of C equi pneumonia. Preventive therapy should include control of environmental dust.
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PMID:Studies of an outbreak of Corynebacterium equi pneumonia in foals. 731

Two adult female cynomolgus monkeys (Macaca fascicularis) that had been housed together for 4 months died within 2 weeks of each other after brief illnesses. Monkey No. 1 presented with collapse, watery stool, and hypothermia and died overnight. Monkey No. 2 presented with dyspnea, nasal discharge, leukopenia, and hypoproteinemia and was euthanized after 2 days. Both animals had peritoneal effusions, massive necrosis of pharyngeal, esophageal, and gastric mucosa, and multifocal hepatic and pancreatic necrosis. Monkey No. 2 also had lingual ulcers and locally extensive necrosis of spleen, adrenal glands, and lymph nodes. Large numbers of eosinophilic intranuclear inclusion bodies were present in epithelial and syncytial cells adjoining the necrotic foci in Monkey No. 2 but were absent in Monkey No. 1. Monkey No. 1 seroconverted to cercopithecine herpesvirus 1 (CHV-1, commonly known as herpes B) in the month before death. CHV-1 was isolated from a sample of stomach from Monkey No. 2, and electron microscopy of liver from this animal demonstrated herpesvirus particles within hepatocytes. Both animals were seropositive for simian type D retrovirus, and the virus was cultured from the liver of Monkey No. 2. A diagnosis of disseminated CHV-1 infection was made, possibly occurring secondary to immunosuppression due to infection with simian type D retrovirus. Although a high percentage of cynomolgus monkeys are apparently infected with CHV-1, disseminated disease is rare. Because infection with CHV-1 in humans is associated with a high fatality rate, familiarity with the lesions of disseminated infection with this virus is important.
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PMID:Fatal disseminated cercopithecine herpesvirus 1 (herpes B infection in cynomolgus monkeys (Macaca fascicularis). 938 51

Blastomycosis was diagnosed in six nondomestic felids from eastern Tennessee, including two Asian lions (Panthera leo persicus), one African lion (Panthera leo), one Siberian tiger (Panthera tigris), one cheetah (Acinonyx jubatus), and one snow leopard (Panthera uncia). Clinical signs included lethargy, anorexia, weight loss, dyspnea, sneezing. ataxia, and paresis. Variable nonspecific changes included leukocytosis, monocytosis, moderate left shift of neutrophils, moderate hypercalcemia, hyperproteinemia, and hyperglobulinemia. Thoracic radiographs revealed interstitial and alveolar changes, consolidation or collapse of a lung lobe, bullae formation, and a pulmonary mass. Agar gel immunodiffusion (AGID) serology for Blastomyces dermatitidis was performed in five felids and was positive in three. The tiger had cerebral blastomycosis and was positive for AGID serologic tests of both cerebrospinal fluid and serum. One percutaneous lung aspirate in the snow leopard and one bronchial aspirate in an Asian lion demonstrated B. dermatitidis organisms. whereas tracheal wash samples and a nasal discharge were nondiagnostic in others. Treatment with itraconazole was attempted in four cats. The tiger improved before euthanasia, whereas the others did not survive beyond initial treatments. In four felids, B. dermatitidis was found in the lungs and tracheobronchial lymph nodes associated with a florid pyogranulomatous reaction; the tiger had a pyogranulomatous encephalomyelitis, and the cheetah had a single pulmonary granuloma. Thoracic radiography, cytologic examination of lung lesion aspirates, and B. dermatitidis AGID serology should be performed on clinically ill zoo felids in endemic areas to rule out blastomycosis.
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PMID:Blastomycosis in nondomestic felids. 1458 83

A 17-year-old desexed male Birman cat presented with a fleshy mass protruding from the left ear canal. A culture from the mass revealed a heavy growth of Cryptococcus gattii (molecular type VGII, serotype B). The lesion resolved with antifungal therapy over 8 weeks. Itraconazole was continued indefinitely due to persistent high serum cryptococcal antigen titres. The cat was euthanased 12 months later due to the acute development of hindlimb ataxia and collapse which may or may not have been attributable to cryptococcosis. This cat had first presented when 4 years of age with a 3-week history of inappetance, sneezing and serous nasal discharge. Culture of swabs from both nostrils were positive for C. gattii (VGII). Fluconazole therapy produced steady improvement over a 6 month period, at which time therapy was discontinued. The cat presented 9 months later for sneezing, again with a positive culture of C. gattii from the nasal cavity. Antifungal therapy was continued for 8 months, after which time cultures were negative and symptoms resolved. Three episodes of cryptococcosis in a cat over a 13-year period were thus documented. Importantly, the two C. gattii isolates, obtained 13 years apart, were identical using DNA fingerprinting and random amplification of polymorphic DNA (RAPD) analysis.
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PMID:Recrudescent cryptococcosis, caused by Cryptococcus gattii (molecular type VGII), over a 13-year period in a Birman cat. 1696 75

Clinical signs of severe bronchopneumonia, including anorexia, coughing, nasal discharge, dyspnoea, diarrhoea, distension of the neck, lethargy, recumbency, lameness preceding collapse, and death were observed among a herd of Holstein-Friesian dairy cattle. The outbreak occurred over a 30-day period, and attack and case-fatality rates were 0.4% and 50%, respectively. At necropsy, extensive consolidation in the cranioventral parts of the lungs was observed. Histologically, a severe acute bronchopneumonia with slight pleuritis was present. Both pathological and bacteriological evaluation of the lungs incriminated Histophilus somni (heavy growth). Supplementary laboratory investigations also isolated Clostridium and Klebsiella species (scanty growth) from the lungs. Histophilosis in cattle was confirmed for the first time in Nigeria.
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PMID:The first report of Histophilus somni pneumonia in Nigerian dairy cattle. 1844 35