scholarly journals Pathogen Risk Analysis for Wild Amphibian Populations Following the First Report of a Ranavirus Outbreak in Farmed American Bullfrogs (Lithobates catesbeianus) from Northern Mexico

Viruses ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 26 ◽  
Author(s):  
Bernardo Saucedo ◽  
José M. Serrano ◽  
Mónica Jacinto-Maldonado ◽  
Rob S. E. W. Leuven ◽  
Abraham A. Rocha García ◽  
...  

Ranaviruses are the second deadliest pathogens for amphibian populations throughout the world. Despite their wide distribution in America, these viruses have never been reported in Mexico, the country with the fifth highest amphibian diversity in the world. This paper is the first to address an outbreak of ranavirus in captive American bullfrogs (Lithobates catesbeianus) from Sinaloa, Mexico. The farm experienced high mortality in an undetermined number of juveniles and sub-adult bullfrogs. Affected animals displayed clinical signs and gross lesions such as lethargy, edema, skin ulcers, and hemorrhages consistent with ranavirus infection. The main microscopic lesions included mild renal tubular necrosis and moderate congestion in several organs. Immunohistochemical analyses revealed scant infected hepatocytes and renal tubular epithelial cells. Phylogenetic analysis of five partial ranavirus genes showed that the causative agent clustered within the Frog virus 3 clade. Risk assessment with the Pandora+ protocol demonstrated a high risk for the pathogen to affect amphibians from neighboring regions (overall Pandora risk score: 0.619). Given the risk of American bullfrogs escaping and spreading the disease to wild amphibians, efforts should focus on implementing effective containment strategies and surveillance programs for ranavirus at facilities undertaking intensive farming of amphibians.

2000 ◽  
Vol 12 (5) ◽  
pp. 468-472 ◽  
Author(s):  
James T. Raymond ◽  
Michael M. Garner

From 1994 to 1999, 16 captive African hedgehogs ( Atelerix albiventris), from among 42 necropsy cases, were diagnosed with cardiomyopathy. The incidence of cardiomyopathy in this study population was 38%. Fourteen of 16 hedgehogs with cardiomyopathy were males and all hedgehogs were adult (>1 year old). Nine hedgehogs exhibited 1 or more of the following clinical signs before death: heart murmur, lethargy, icterus, moist rales, anorexia, dyspnea, dehydration, and weight loss. The remaining 7 hedgehogs died without premonitory clinical signs. Gross findings were cardiomegaly (6 cases), hepatomegaly (5 cases), pulmonary edema (5 cases), pulmonary congestion (4 cases), hydrothorax (3 cases), pulmonary infarct (1 case), renal infarcts (1 case), ascites (1 case), and 5 cases showed no changes. Histologic lesions were found mainly within the left ventricular myocardium and consisted primarily of myodegeneration, myonecrosis, atrophy, hypertrophy, and disarray of myofibers. All hedgehogs with cardiomyopathy had myocardial fibrosis, myocardial edema, or both. Other common histopathologic findings were acute and chronic passive congestion of the lungs, acute passive congestion of the liver, renal tubular necrosis, vascular thrombosis, splenic extramedullary hematopoiesis, and hepatic lipidosis. This is the first report of cardiomyopathy in African hedgehogs.


Author(s):  
Sthefany Rosa Alfaia ◽  
Marcelo Cândido ◽  
Ricardo Luiz Moro de Sousa ◽  
Ricardo Harakava ◽  
Luara Lucena Cassiano ◽  
...  

An alarming number of global warnings concerning amphibian mortality outbreaks have been released in recent years. Emerging diseases stand out as the main potential causes. Ranavirus is a worldwide-spread highly infectious disease capable of affecting even other ectothermic animals such as fish and reptiles. One major issue regarding this pathology is the lack of clinical signs before it leads up to death. Aiming at having a better understanding of anurans susceptibility, this study analyzed bullfrog (Lithobates catesbeianus) survival rate, when challenged with three doses of a Brazilian strain of Frog Virus 3 (FV3). The qPCR analysis indicated a low infectivity rate in these animals both as larvae and as adults. To elucidate the results, the following hypothesis was performed: 1) The amount of inoculum used on the frogs was insufficient to trigger an infection; 2) For the FV3 to produce clinical signs in this species, there is the need for a cofactor; 3) The animals did undergo FV3 infection but recovered in the course of the experiment, and 4) The inoculum utilized might have been low-virulence. Finally, the presence of actual clinical signs of ranavirus is discussed, with the more likely hypothesis.


2020 ◽  
Vol 7 (2) ◽  
pp. 199-204
Author(s):  
Shrikant Verma ◽  
Mohammad Abbas ◽  
Sushma Verma ◽  
Syed Tasleem Raza ◽  
Farzana Mahdi

A novel spillover coronavirus (nCoV), with its epicenter in Wuhan, China's People's Republic, has emerged as an international public health emergency. This began as an outbreak in December 2019, and till November eighth, 2020, there have been 8.5 million affirmed instances of novel Covid disease2019 (COVID-19) in India, with 1,26,611 deaths, resulting in an overall case fatality rate of 1.48 percent. Coronavirus clinical signs are fundamentally the same as those of other respiratory infections. In different parts of the world, the quantity of research center affirmed cases and related passings are rising consistently. The COVID- 19 is an arising pandemic-responsible viral infection. Coronavirus has influenced huge parts of the total populace, which has prompted a global general wellbeing crisis, setting all health associations on high attentive. This review sums up the overall landmass, virology, pathogenesis, the study of disease transmission, clinical introduction, determination, treatment, and control of COVID-19 with the reference to India.


PERENNIAL ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 33
Author(s):  
Astuti Arif ◽  
. Syahidah ◽  
Sitti Nuraeni

Fungi have a great diversity and wide distribution at the world. It can be used as the alternative technology for controlling of subterranean termite attack, particularly genus Coptotermes knowned as the wooden destructive organism, by using entomophatogenic fungi. For the purpose of the study, several isolate sources were taken from some locations. The results show that eight numbers of pathogenic fungi was founded by screening and identification of fungi taken from 19 numbers of isolate sources. The pathogenic fungi were Beauveria sp., Penicillium brevicompactum, P. rubrum, Paecilomyces fulvus, Fusarium verticolloides, Pythium sp., and Aspergillus sp. Key words: Jamur entomopatogen, Coptotermes sp.


2005 ◽  
Vol 33 (3) ◽  
pp. 281-291 ◽  
Author(s):  
Maya Damianovich ◽  
Ilan Ziv ◽  
Samuel N. Heyman ◽  
Seymour Rosen ◽  
Ahuva Shina ◽  
...  

BMJ ◽  
1970 ◽  
Vol 1 (5693) ◽  
pp. 410-412 ◽  
Author(s):  
A. R. Chrispin ◽  
D. Hull ◽  
J. G. Lillie ◽  
R. A. Ridson

2014 ◽  
Vol 66 (4) ◽  
pp. 1046-1050
Author(s):  
B.B.J. Torres ◽  
G.C. Martins ◽  
P.E. Ferian ◽  
B.C. Martins ◽  
M.A. Rachid ◽  
...  

Feline dysautonomia is a devastating disease characterized by neuronal degeneration in autonomic ganglia that results in clinical signs related to dysfunction of the sympathetic and parasympathetic nervous systems. The cause is unknown and this disease has a poor prognosis and no definitive treatment. Most reports have been described in few countries around the world, but the prevalence may be underestimated in countries like Brazil. This study describes the progression and clinicopathological changes of dysautonomia in a 17-month-old female Brazilian shorthair cat.


2021 ◽  
Vol 9 (9) ◽  
pp. 2144-2150
Author(s):  
Shivam Kumar Nigam ◽  
Rita Singh ◽  
Sanjay Srivastava

Pandu Roga is one of the diseases mentioned in Ayurveda characterized by the changes in the skin colour to white (Shweta), yellowish (Peeta), greenish (Harita) etc. which is one of the “Varnopalakshita Roga" i.e., a disease characterized by the change in the colour. The clinical condition of Pandu in Ayurveda can be co-related with Anaemia described in Modern Medical Science, due to the resemblance in the clinical signs and symptoms. In Modern Medicine, Pandu is a pale appearance which may be due to the decreased blood supply to the skin or de- creased visibility of oxyhemoglobin. Anaemia is a major global public health problem and the most prevalent nu- tritional deficiency disorder in the world. This article presents the Ayurvedic concept of Pandu Roga (Anaemia). Keywords: Pandu, Vyadhi, Srotas, Anaemia, Pallor,


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