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Wilmes D, Hagen F, Verissimo C, Alanio A, Rickerts V, Buitrago MJ. A multicentre external quality assessment: A first step to standardise PCR protocols for the diagnosis of histoplasmosis and coccidioidomycosis. Mycoses 2023. [PMID: 37169736 DOI: 10.1111/myc.13603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND In-house real-time PCR (qPCR) is increasingly used to diagnose the so-called endemic mycoses as commercial assays are not widely available. OBJECTIVES To compare the performance of different molecular diagnostic assays for detecting Histoplasma capsulatum and Coccidioides spp. in five European reference laboratories. METHODS Two blinded external quality assessment (EQA) panels were sent to each laboratory that performed the analysis with their in-house assays. Both panels included a range of concentrations of H. capsulatum (n = 7) and Coccidioides spp. (n = 6), negative control and DNA from other fungi. Four laboratories used specific qPCRs, and one laboratory a broad-range fungal conventional PCR (cPCR) and a specific cPCR for H. capsulatum with subsequent sequencing. RESULTS qPCR assays were the most sensitive for the detection of H. capsulatum DNA. The lowest amount of H. capsulatum DNA detected was 1-4 fg, 0.1 pg and 10 pg for qPCRs, specific cPCR and broad-range cPCR, respectively. False positive results occurred with high concentrations of Blastomyces dermatitidis DNA in two laboratories and with Emergomyces spp. in one laboratory. For the Coccidioides panel, the lowest amount of DNA detected was 1-16 fg by qPCRs and 10 pg with the broad-range cPCR. One laboratory reported a false positive result by qPCR with high load of Uncinocarpus DNA. CONCLUSION All five laboratories were able to correctly detect H. capsulatum and Coccidioides spp. DNA and qPCRs had a better performance than specific cPCR and broad-range cPCR. EQAs may help standardise in-house molecular tests for the so-called endemic mycoses improving patient management.
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Affiliation(s)
- Dunja Wilmes
- FG16, Unit for Mycotic and Parasitic Agents and Mycobacteria, Robert Koch Institute, Berlin, Germany
| | - Ferry Hagen
- Westerdijk Fungal Biodiversity Institute (WI-KNAW), Utrecht, The Netherlands
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Cristina Verissimo
- Department of Infectious Diseases, Reference Laboratory for Parasites and Fungal infections, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal
| | - Alexandre Alanio
- Mycology Department, Translational Mycology Research Group, National Reference Center for Invasive Mycoses and Antifungals, Institut Pasteur, Université Paris Cité, Paris, France
- Laboratoire de Parasitologie-Mycologie, AP-HP, Hôpital Saint-Louis, Paris, France
| | - Volker Rickerts
- FG16, Unit for Mycotic and Parasitic Agents and Mycobacteria, Robert Koch Institute, Berlin, Germany
- Konsiliarlabor für Kryptokokkose und Seltene Systemmykosen, Robert Koch Institute, Berlin, Germany
| | - Maria José Buitrago
- Reference Mycology Laboratory, National Centre for Microbiology, Instituto de Salud Carlos III, Madrid, Spain
- CIBERINFEC, ISCIII-CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
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Huang YH, Magleby R, Rao R, Walsh TJ, Singh HK. Histoplasmosis in an off-trail Hiker receiving ustekinumab: Implications for Preventive and diagnostic strategies for patients receiving anti-IL-12/23 therapy. Med Mycol Case Rep 2021; 32:43-46. [PMID: 33816098 PMCID: PMC8010353 DOI: 10.1016/j.mmcr.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 11/18/2022] Open
Abstract
Ustekinumab, an IL-12/23 inhibitor, is an important agent in treatment of inflammatory bowel disease and psoriasis. Clinical trials have not demonstrated significantly increased infection risk with ustekinumab. We report a case of disseminated histoplasmosis in the setting of ustekinumab and methotrexate following a hike in the Catskill Mountains, a region not commonly associated with Histoplasma encapsulatum. To our knowledge, this is the first reported case of newly acquired histoplasmosis complicating treatment with ustekinumab.
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Affiliation(s)
- Yun-Han Huang
- Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, 1300 York Ave, New York, NY, 10065, USA
| | - Reed Magleby
- Weill Cornell Medicine, Division of Infectious Diseases, 1305 York Ave, New York, NY, 10021, USA
| | - Rema Rao
- Weill Cornell Medicine, Pathology and Laboratory Medicine, 1300 York Ave, New York, NY, 10065, USA
| | - Thomas J. Walsh
- Weill Cornell Medicine, Division of Infectious Diseases, 1305 York Ave, New York, NY, 10021, USA
| | - Harjot K. Singh
- Weill Cornell Medicine, Division of Infectious Diseases, 1305 York Ave, New York, NY, 10021, USA
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INTESTINAL HISTOPLASMOSIS IN A CAPTIVE REINDEER (RANGIFER TARANDUS), MISSOURI, USA. J Zoo Wildl Med 2019; 48:925-928. [PMID: 28920817 DOI: 10.1638/2016-0246.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An infection with Histoplasma capsulatum was diagnosed in a farmed reindeer in Missouri, an endemic area for histoplasmosis, localized in the intestine. The intrahistiocytic organisms were identified in tissue sections using histologic methods and confirmed by immunohistochemistry. This is the first report of histoplasmosis in a reindeer or in any deer species.
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A necrotic tonsillar lesion: An unusual presentation of disseminated histoplasmosis. Respir Med Case Rep 2017; 22:44-46. [PMID: 28652964 PMCID: PMC5476462 DOI: 10.1016/j.rmcr.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 11/21/2022] Open
Abstract
We report a case of tonsillar histoplasmosis with hematogenous dissemination in a woman receiving infliximab for Crohn's disease. She also had a history of sarcoidosis. Due to the unusual location and confounding medical history, our case provided a diagnostic dilemma. Histoplasma infection was confirmed histologically, and the patient responded well to appropriate treatment.
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Exophiala (Wangiella) dermatitidis Prosthetic Aortic Valve Endocarditis and Prosthetic Graft Infection in an Immune Competent Patient. Case Rep Infect Dis 2017; 2017:4839314. [PMID: 28484654 PMCID: PMC5412134 DOI: 10.1155/2017/4839314] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 03/02/2017] [Accepted: 03/21/2017] [Indexed: 01/14/2023] Open
Abstract
Exophiala (Wangiella) dermatitidis is an emerging dematiaceous fungus associated with high mortality rates and is a rare cause of endocarditis. We describe the first case of E. dermatitidis endocarditis of a prosthetic aortic valve and aortic graft in an immune competent patient with no clear risk factors of hematological acquisition.
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6
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Brilhante RSN, Guedes GMDM, Riello GB, Ribeiro JF, Alencar LP, Bandeira SP, Castelo-Branco DSCM, Oliveira JS, Freire JMM, Mesquita JRLD, Camargo ZPD, Cordeiro RDA, Rocha MFG, Sidrim JJC. RYP1 gene as a target for molecular diagnosis of histoplasmosis. J Microbiol Methods 2016; 130:112-114. [PMID: 27633713 DOI: 10.1016/j.mimet.2016.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/08/2016] [Accepted: 09/09/2016] [Indexed: 11/19/2022]
Abstract
This study analyzed the RYP1 gene as a target for the molecular diagnosis of histoplasmosis. This assay detected fungal DNA in 13/13 blood samples from HIV/AIDS-patients with histoplasmosis. Therefore, the detection of RYP1 gene in whole blood sample is a quick and sensitive test to diagnose histoplasmosis.
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Affiliation(s)
- Raimunda Sâmia Nogueira Brilhante
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Glaucia Morgana de Melo Guedes
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Giovanna Barbosa Riello
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Joyce Fonteles Ribeiro
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Lucas Pereira Alencar
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Silviane Praciano Bandeira
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Débora Souza Collares Maia Castelo-Branco
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Jonathas Sales Oliveira
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Janaína Maria Maia Freire
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Zoilo Pires de Camargo
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Rossana de Aguiar Cordeiro
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Marcos Fábio Gadelha Rocha
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil; College of Veterinary Medicine, Postgraduate Program in Veterinary Sciences, State University of Ceará, Fortaleza, Ceará, Brazil
| | - José Júlio Costa Sidrim
- Specialized Medical Mycology Center, Postgraduate Program in Medical Microbiology, Department of Pathology and Legal Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil
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Sahaza JH, Pérez-Torres A, Zenteno E, Taylor ML. Usefulness of the murine model to study the immune response against Histoplasma capsulatum infection. Comp Immunol Microbiol Infect Dis 2014; 37:143-52. [PMID: 24766724 DOI: 10.1016/j.cimid.2014.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/14/2014] [Accepted: 03/19/2014] [Indexed: 12/19/2022]
Abstract
The present paper is an overview of the primary events that are associated with the histoplasmosis immune response in the murine model. Valuable data that have been recorded in the scientific literature have contributed to an improved understanding of the clinical course of this systemic mycosis, which is caused by the dimorphic fungus Histoplasma capsulatum. Data must be analyzed carefully, given that misinterpretation could be generated because most of the available information is based on experimental host-parasite interactions that used inappropriate proceedings, i.e., the non-natural route of infection with the parasitic and virulent fungal yeast-phase, which is not the usual infective phase of the etiological agent of this mycosis. Thus, due to their versatility, complexity, and similarities with humans, several murine models have played a fundamental role in exploring the host-parasite interaction during H. capsulatum infection.
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Affiliation(s)
- Jorge H Sahaza
- Laboratorio de Inmunología de Hongos, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), México, DF 04510, Mexico; Unidad de Micología Médica y Experimental, Corporación para Investigaciones Biológicas, Medellín, Colombia
| | - Armando Pérez-Torres
- Laboratorio de Filogenia del Sistema Inmune de Piel y Mucosas, Departamento de Biología Celular y Tisular, Facultad de Medicina, UNAM, México, DF 04510, Mexico
| | - Edgar Zenteno
- Laboratorio de Inmunología, Departamento de Bioquímica, Facultad de Medicina, UNAM, México, DF 04510, Mexico
| | - Maria Lucia Taylor
- Laboratorio de Inmunología de Hongos, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), México, DF 04510, Mexico.
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Momo C, Rocha NADS, Moreira PRR, Munari DP, Bomfim SRM, Rozza DB, Vasconcelos RDO. Morphological changes and parasite load of the adrenal from dogs with visceral leishmaniasis. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2014; 23:30-5. [DOI: 10.1590/s1984-29612014004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 01/30/2014] [Indexed: 11/21/2022]
Abstract
The objective of this study was to analyze morphological changes and parasite loads in the adrenal gland from 45 dogs with visceral leishmaniasis (VL). The animals were from the Zoonosis Control Center of Araçatuba, state of São Paulo, which is an endemic region for the disease. These animals were euthanized due to positive diagnoses of VL. The dogs were classified into asymptomatic, oligosymptomatic and symptomatic groups. The parasite load was determined by immunohistochemistry, using VL-positive dog hyperimmune serum. Nine dogs showed an inflammatory infiltrate composed, predominantly, of plasma cells and macrophages. However, only eight dogs showed macrophages with amastigote forms of the parasite, immunolabeled in the cytoplasm. The medullary and reticular layers were the most affected areas, possibly due to a favorable microenvironment created by hormones in these regions. The density of parasites in the glandular tissue was not associated with clinical signs of VL (P > 0.05). However, the presence of the parasite was always associated with the presence of a granulomatous inflammatory infiltrate. This gland may not be an ideal place for the parasite's multiplication, but the presence of injuries to the glandular tissue could influence the dog's immune system, thus favoring the parasite's survival in the host's different organs.
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Clothier KA, Villanueva M, Torain A, Reinl S, Barr B. Disseminated histoplasmosis in two juvenile raccoons (Procyon lotor) from a nonendemic region of the United States. J Vet Diagn Invest 2014; 26:297-301. [DOI: 10.1177/1040638714521207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two 6-month-old raccoon kits, which had been rescued and fostered in preparation for return to the wild, became acutely ill and died 3 weeks before scheduled release. At necropsy, the kits had grossly enlarged livers and spleens, diffusely consolidated lungs, and generalized lymphadenopathy. Histologically, extensive infiltrates of macrophages containing yeast organisms were identified in lung, liver, kidney, spleen, lymph nodes, intestinal tissues, brain, adrenal gland, bone marrow, and thymus of both animals. Histiocytic inflammation with accompanying fibrosis was widespread, with necrotic foci evident in lungs, spleen, and intestinal sections. Fungal organisms were observed on sheep blood agar plates; however, repeated subcultures to fungal media designed to induce conidial structures for fungal identification were unsuccessful. Partial DNA sequencing of the 28S ribosomal RNA gene of the blood agar isolate identified 100% homology with Ajellomyces capsulatus (anamorphic name Histoplasma capsulatum). The kits were rescued and fostered in the San Francisco Bay area and it is likely that the exposure to H. capsulatum occurred in this area. Histoplasma sp. infection in wild mammal species is often used as an indication of spore contamination of a geographic region. Northern California is not known to be an endemic region for H. capsulatum, which is not a reportable disease in this state. The presence of severe, disseminated disease and the need for molecular identification associated with the isolate from a nonendemic region identified in the present report may indicate genetic adaptation and altered characteristics of this agent and may warrant further investigation.
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Affiliation(s)
- Kristin A. Clothier
- California Animal Health and Food Safety Laboratory System (Clothier, Villanueva, Torain, Reinl, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
- Department of Pathology, Microbiology, and Immunology (Clothier, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
| | - Michelle Villanueva
- California Animal Health and Food Safety Laboratory System (Clothier, Villanueva, Torain, Reinl, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
- Department of Pathology, Microbiology, and Immunology (Clothier, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
| | - Andrea Torain
- California Animal Health and Food Safety Laboratory System (Clothier, Villanueva, Torain, Reinl, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
- Department of Pathology, Microbiology, and Immunology (Clothier, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
| | - Steve Reinl
- California Animal Health and Food Safety Laboratory System (Clothier, Villanueva, Torain, Reinl, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
- Department of Pathology, Microbiology, and Immunology (Clothier, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
| | - Bradd Barr
- California Animal Health and Food Safety Laboratory System (Clothier, Villanueva, Torain, Reinl, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
- Department of Pathology, Microbiology, and Immunology (Clothier, Barr), University of California, Davis, School of Veterinary Medicine, Davis, CA
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Dhama K, Chakraborty S, Verma AK, Tiwari R, Barathidasan R, Kumar A, Singh SD. Fungal/mycotic diseases of poultry-diagnosis, treatment and control: a review. Pak J Biol Sci 2013; 16:1626-1640. [PMID: 24506030 DOI: 10.3923/pjbs.2013.1626.1640] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Fungal/mycotic diseases cause significant economic losses to the poultry industry either due to their direct infectious nature or due to production of mycotoxins, the secondary fungal metabolites produced in grains or poultry feed. Several fungi have created havoc in the poultry industry and some of them cause direct harm to human health due to their zoonotic implications. They are responsible for high morbidity and mortality, especially in young birds and cause stunted growth and diarrhea; and fatal encephalitis. Mycotic dermatitis is a possible health hazard associated with poultry houses. Mycotoxins are the leading cause of producing immunosuppression in birds, which makes them prone to several bacterial and viral infections leading to huge economic losses to the poultry industry. In comparison to bacterial and viral diseases, advances in diagnosis, treatment, prevention and control of fungal diseases in poultry has not taken much attention. Recently, molecular biological tools have been explored for rapid and accurate diagnosis of important fungal infections. Effective prevention and control measures include: appropriate hygiene, sanitation and disinfection, strict biosecurity programme and regular surveillance/monitoring of fungal infections as well as following judicious use of anti-fungal drugs. Precautionary measures during crop production, harvesting and storing and in feed mixing plants can help to check the fungal infections including health hazards of mycotoxins/mycotoxicosis. The present review describes the fungal pathogens causing diseases in poultry/birds, especially focusing to their diagnosis, prevention and control measures, which would help in formulating appropriate strategies to have a check and control on these unwanted troubles to the poultry producers/farmers.
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Affiliation(s)
- Kuldeep Dhama
- Avian Diseases Section, Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly-243122, India
| | - Sandip Chakraborty
- Animal Resources Development Department, Pt. Nehru Complex, Agartala, Tripura-799006, India
| | - Amit Kumar Verma
- Department of Veterinary Epidemiology and Preventive Medicine, India
| | - Ruchi Tiwari
- Department of Veterinary Microbiology and Immunology, Uttar Pradesh Pandit Deen Dayal Upadhayay, Pashu Chikitsa Vigyan Vishwa Vidyalaya Evam Go-Anusandhan Sansthan, Mathura-281001, India
| | - Rajamani Barathidasan
- Avian Diseases Section, Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly-243122, India
| | - Amit Kumar
- Department of Veterinary Microbiology and Immunology, Uttar Pradesh Pandit Deen Dayal Upadhayay, Pashu Chikitsa Vigyan Vishwa Vidyalaya Evam Go-Anusandhan Sansthan, Mathura-281001, India
| | - Shambhu Dayal Singh
- Avian Diseases Section, Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly-243122, India
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