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Jiang P, Yan X, Cai T, Huang L, Liu Z, Hao L, Huang T, Yang H, Xu M, Shi W, Shui T. Exploring the Birthday Week Effect on Hand, Foot, and Mouth Disease in Yunnan Province, China, From 2008 to 2022: Surveillance Data Analysis. JMIR Public Health Surveill 2024; 10:e59237. [PMID: 39250185 PMCID: PMC11404391 DOI: 10.2196/59237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 07/02/2024] [Accepted: 07/04/2024] [Indexed: 09/10/2024] Open
Abstract
Background Hand, foot, and mouth disease (HFMD) is a notable infectious disease predominantly affecting infants and children worldwide. Previous studies on HFMD have primarily focused on natural patterns, such as seasonality, but research on the influence of important social time points is lacking. Several studies have indicated correlations between birthdays and certain disease outcomes. Objective This study aimed to explore the association between birthdays and HFMD. Methods Surveillance data on HFMD from 2008 to 2022 in Yunnan Province, China, were collected. We defined the period from 6 days before the birthday to the exact birthday as the "birthday week." The effect of the birthday week was measured by the proportion of cases occurring during this period, termed the "birthday week proportion." We conducted subgroup analyses to present the birthday week proportions across sexes, age groups, months of birth, and reporting years. Additionally, we used a modified Poisson regression model to identify conditional subgroups more likely to contract HFMD during the birthday week. Results Among the 973,410 cases in total, 116,976 (12.02%) occurred during the birthday week, which is 6.27 times the average weekly proportion (7/365, 1.92%). While the birthday week proportions were similar between male and female individuals (68,849/564,725, 12.19% vs 48,127/408,685, 11.78%; χ21=153.25, P<.001), significant differences were observed among different age groups (χ23=47,145, P<.001) and months of birth (χ211=16,942, P<.001). Compared to other age groups, infants aged 0-1 year had the highest birthday week proportion (30,539/90,709, 33.67%), which is 17.57 times the average weekly proportion. Compared to other months, patients born from April to July and from October to December, the peak months of the HFMD epidemic, had higher birthday week proportions. Additionally, a decreasing trend in birthday week proportions from 2008 to 2022 was observed, dropping from 33.74% (3914/11,600) to 2.77% (2254/81,372; Cochran-Armitage trend test: Z=-102.53, P<.001). The results of the modified Poisson regression model further supported the subgroup analyses findings. Compared with children aged >7 years, infants aged 0-1 year were more likely to contract HFMD during the birthday week (relative risk 1.182, 95% CI 1.177-1.185; P<.001). Those born during peak epidemic months exhibited a higher propensity for contracting HFMD during their birthday week. Compared with January, the highest relative risk was observed in May (1.087, 95% CI 1.084-1.090; P<.001). Conclusions This study identified a novel "birthday week effect" of HFMD, particularly notable for infants approaching their first birthday and those born during peak epidemic months. Improvements in surveillance quality may explain the declining trend of the birthday week effect over the years. Higher exposure risk during the birthday period and potential biological mechanisms might also account for this phenomenon. Raising public awareness of the heightened risk during the birthday week could benefit HFMD prevention and control.
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Affiliation(s)
- Pei Jiang
- School of Public Health, North Sichuan Medical College, Nanchong, China
| | - Xiangyu Yan
- School of Disaster and Emergency Medicine, Tianjin University, Tianjin, China
| | - Tongjian Cai
- Department of Epidemiology, College of Preventive Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Longxin Huang
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, China
| | - Zhenzhong Liu
- School of Public Health, North Sichuan Medical College, Nanchong, China
| | - Linhui Hao
- Yunnan Center for Disease Control and Prevention, Xianghe Street #1177, Chenggong District, Kunming, 650050, China, 86 13987165649
| | - Tian Huang
- Yunnan Center for Disease Control and Prevention, Xianghe Street #1177, Chenggong District, Kunming, 650050, China, 86 13987165649
| | - Haijun Yang
- Yan'An Hospital of Kunming City, Kunming, China
| | - Min Xu
- Hospital of Xi Zang Medicine, Lhasa, China
| | - Wenhui Shi
- Lanke Medical Technology Nanjing Research Institution, Nanjing, China
| | - Tiejun Shui
- Yunnan Center for Disease Control and Prevention, Xianghe Street #1177, Chenggong District, Kunming, 650050, China, 86 13987165649
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Zhou X, Ahmed SA, Tang C, Grisolia ME, Warth JFG, Webster K, Peano A, Uhrlass S, Cafarchia C, Hayette MP, Sacheli R, Matos T, Kang Y, de Hoog GS, Feng P. Human adaptation and diversification in the Microsporum canis complex. IMA Fungus 2023; 14:14. [PMID: 37488659 PMCID: PMC10367411 DOI: 10.1186/s43008-023-00120-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 06/26/2023] [Indexed: 07/26/2023] Open
Abstract
The Microsporum canis complex consists of one zoophilic species, M. canis, and two anthropophilic species, M. audouinii and M. ferrugineum. These species are the most widespread zoonotic pathogens causing dermatophytosis in cats and humans worldwide. To clarify the evolutionary relationship between the three species and explore the potential host shift process, this study used phylogenetic analysis, population structure analysis, multispecies coalescent analyses, determination of MAT idiomorph distribution, sexual crosses, and macromorphology and physicochemical features to address the above questions. The complex of Microsporum canis, M. audouinii and M. ferrugineum comprises 12 genotypes. MAT1-1 was present only in M. canis, while the anthropophilic entities contained MAT1-2. The pseudocleistothecia were yielded by the mating behaviour of M. canis and M. audouinii. Growth rates and lipase, keratinolysis and urea hydrolytic capacities of zoophilic M. canis isolates were all higher than those of anthropophilic strains; DNase activity of M. ferrugineum exceeded that of M. canis. The optimum growth temperature was 28 °C, but 22 °C favoured the development of macroconidia. Molecular data, physicochemical properties and phenotypes suggest the adaptation of zoophilic M. canis to anthropophilic M. ferrugineum, with M. audouinii in an intermediate position.
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Affiliation(s)
- Xin Zhou
- Center of Expertise in Mycology of Radboud University Medical Center, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
- Department of Dermatology, 3rd Affiliated Hospital, Sun Yat-senen University, Guangzhou, China
| | - Sarah A Ahmed
- Center of Expertise in Mycology of Radboud University Medical Center, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
- Foundation Atlas of Clinical Fungi, Hilversum, The Netherlands
| | - Chao Tang
- Center of Expertise in Mycology of Radboud University Medical Center, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - Maria Eduarda Grisolia
- Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil
| | | | - Kristen Webster
- Department of Dermatology, Center for Medical Mycology, University Hospitals, Cleveland, USA
| | - Andrea Peano
- Department of Veterinary Sciences, University of Turin, Grugliasco, Italy
| | - Silke Uhrlass
- Labor für Medizinische Mikrobiologie Nenoff / Krüger, Mölbis, Germany
| | - Claudia Cafarchia
- Department of Veterinary Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Marie Pierre Hayette
- Belgian National Reference Center, Clinical Microbiology, University Hospital of Liege, Liege, Belgium
| | - Rosalie Sacheli
- Belgian National Reference Center, Clinical Microbiology, University Hospital of Liege, Liege, Belgium
| | - Tadeja Matos
- Medical Faculty, Institute of Microbiology and Immunology, University of Ljubljana, Ljubljana, Slovenia
| | - Yingqian Kang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education of Guizhou & Guizhou Talent Base for Microbiology and Human Health, School of Basic Medical Sciences, Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, Guizhou Medical University, Guiyang, China.
- Guizhou Provincial Academician Workstation of Microbiology and Health, Guizhou Academy of Tobacco Science, Guiyang, China.
| | - G Sybren de Hoog
- Center of Expertise in Mycology of Radboud University Medical Center, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands.
- Foundation Atlas of Clinical Fungi, Hilversum, The Netherlands.
- Bioprocess Engineering and Biotechnology, Federal University of Paraná, Curitiba, Brazil.
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education of Guizhou & Guizhou Talent Base for Microbiology and Human Health, School of Basic Medical Sciences, Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, Guizhou Medical University, Guiyang, China.
| | - Peiying Feng
- Department of Dermatology, 3rd Affiliated Hospital, Sun Yat-senen University, Guangzhou, China.
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3
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Xia X. Family outbreak of Microsporum canis infection. QJM 2022; 115:679-680. [PMID: 35861567 DOI: 10.1093/qjmed/hcac170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Xiujiao Xia
- Department of Dermatology, Hangzhou Third People's Hospital, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, West Lake Rd 38, Hangzhou 310009, China
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4
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Moskaluk AE, VandeWoude S. Current Topics in Dermatophyte Classification and Clinical Diagnosis. Pathogens 2022; 11:pathogens11090957. [PMID: 36145389 PMCID: PMC9502385 DOI: 10.3390/pathogens11090957] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/28/2022] Open
Abstract
Dermatophytes are highly infectious fungi that cause superficial infections in keratinized tissues in humans and animals. This group of fungi is defined by their ability to digest keratin and encompasses a wide range of species. Classification of many of these species has recently changed due to genetic analysis, potentially affecting clinical diagnosis and disease management. In this review, we discuss dermatophyte classification including name changes for medically important species, current and potential diagnostic techniques for detecting dermatophytes, and an in-depth review of Microsporum canis, a prevalent zoonotic dermatophyte. Fungal culture is still considered the “gold standard” for diagnosing dermatophytosis; however, modern molecular assays have overcome the main disadvantages of culture, allowing for tandem use with cultures. Further investigation into novel molecular assays for dermatophytosis is critical, especially for high-density populations where rapid diagnosis is essential for outbreak prevention. A frequently encountered dermatophyte in clinical settings is M. canis, which causes dermatophytosis in humans and cats. M. canis is adapting to its primary host (cats) as one of its mating types (MAT1-2) appears to be going extinct, leading to a loss of sexual reproduction. Investigating M. canis strains around the world can help elucidate the evolutionary trajectory of this fungi.
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Kisera YV, Martyniv YV, Gutyj BV. Dynamics of morphological, immunological and histological changes in microsporіа in guinea pigs. REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Microsporіа affect different species of animals and humans. The high contagiousness of the pathogen determines the relevance of research into this disease. Microsporum canis is the pathogen that most often causes microsporia. Weakened functions of the immune system and violation of the epithelial barrier of the skin are a favourable factor that causes microspores. The main source of infection is cats, which are involved in the storage and transmission of the pathogen. To clarify the dynamics of morphological, immunological and histological changes in microsporia, blood and skin studies of guinea pigs infected with M. canis were carried out. The animals were divided into two groups of 6 guinea pigs (healthy and sick). Test material (blood and skin) was taken from clinically healthy and sick animals 21 and 42 days after infection. The number of erythrocytes and leukocytes was determined by counting them in the Goryaev chamber, the hemoglobin content – by the method of cyanide hemoglobin. The leukogram was derived based on the counting and differentiation of 200 leukocyte cells in blood smears. Material for histological examination (pieces of skin) was fixed in 10–12% cooled solution of neutral formalin, followed by pouring in paraffin according to the scheme proposed by G. A. Merkulov. The obtained results demonstrated that leukocytosis developed in guinea pigs with microsporia on the 21st and 42nd days; the number of rod-shaped neutrophils increased, that of segmental neutrophils decreased, and that of ESR increased. The immune response to the course of microsporia was manifested in an increase in the percentage of T-lymphocytes, T-suppressors and a decrease in T-helper cells and an increase in T-killers compared with healthy animals. Histological examination showed that on the 21st day after infection, hyphae and spores of the fungus M. canis were localized in the skin. There is swelling of the dermis, stratification of collagen fibers and the accumulation of inflammatory infiltrates around the hair follicles. On the 42nd day, the infiltration spread and dystrophic changes in the skin occurred in the form of desquamation of the epidermis and the formation of acanthosis and hyperkeratosis on the surface of the dermis. The conducted research will allow further assessment of the course of microsporia under the action of various drugs and help establish the most effective method of treatment.
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Hariu M, Watanabe Y, Shimada D, Imai H, Takano K, Kamioka Y, Seki M. A Household Microsporum canis Dermatophytosis Suggested by Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry Analysis. AMERICAN JOURNAL OF CASE REPORTS 2021; 22:e930713. [PMID: 33813588 PMCID: PMC8033217 DOI: 10.12659/ajcr.930713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Case series Patients: Female, 4-year-old • her family (father, mother, sister) Final Diagnosis: Microsporum canis dermatophytosis Symptoms: Itiching Medication: — Clinical Procedure: Time-of-flight mass spectrometry (TOF-MS) Specialty: Infectious Diseases
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Affiliation(s)
- Maya Hariu
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan.,Laboratory for Clinical Microbiology, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Yuji Watanabe
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan.,Laboratory for Clinical Microbiology, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Daishi Shimada
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Haruka Imai
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Kauki Takano
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan.,Laboratory for Clinical Microbiology, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Yasuhiro Kamioka
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan.,Division of Pharmacy, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
| | - Masafumi Seki
- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Sendai City, Miyagi, Japan
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Thakur R, Kalsi AS. Outbreaks And Epidemics Of Superficial Dermatophytosis Due To Trichophyton mentagrophytes Complex And Microsporum canis: Global And Indian Scenario. Clin Cosmet Investig Dermatol 2019; 12:887-893. [PMID: 31849509 PMCID: PMC6913057 DOI: 10.2147/ccid.s220849] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 10/29/2019] [Indexed: 12/27/2022]
Abstract
Until recently, superficial dermatophytosis, also known as tinea, was considered as a minor skin infection, which was easy to treat. There used to be rare outbreaks and epidemics of superficial dermatophytosis. Lately, there is a sweeping change in the clinical presentation due to extensive, atypical and recalcitrant dermatophytosis. Treating such infections poses a great challenge to the clinicians. Dermatophytosis is a superficial fungal infection of keratinized tissue (skin, hairs and nails) by dermatophytes (fungus). It is caused by the three genera of dermatophytes: Trichophyton, Epidermophyton and Microsporum. The conventional methods of laboratory diagnosis have now been substantiated by molecular characterization. Earlier epidemics were usually due to anthropophilic dermatophytes. Now, zoophilic dermatophytes are also responsible for many outbreaks and epidemics. We need to be equipped with the tools to face the current scenario, because this depends upon the competence of the staff working in the state-of-the-art laboratories, which is needed for the study of the epidemiology and appropriate treatment.
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Affiliation(s)
- Rameshwari Thakur
- Department of Dermatology and Microbiology, Muzaffarnagar Medical College and Hospital, Chaudhary Charan Singh University, Meerut, India
| | - Avneet Singh Kalsi
- Department of Dermatology and Microbiology, Muzaffarnagar Medical College and Hospital, Chaudhary Charan Singh University, Meerut, India
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8
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Abastabar M, Jedi A, Guillot J, Ilkit M, Eidi S, Hedayati MT, Shokohi T, Daie Ghazvini R, Rezaei-Matehkolaei A, Katiraee F, Javidnia J, Ahmadi B, Badali H. In vitro activities of 15 antifungal drugs against a large collection of clinical isolates of Microsporum canis. Mycoses 2019; 62:1069-1078. [PMID: 31408550 DOI: 10.1111/myc.12986] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Microsporum canis is a zoophilic species, found to be the most frequently isolated species in animals. M. canis causes sporadic outbreaks of infections in humans, such as the one that occurred in Canada, where more than 1000 human cases were detected over an 8-year period. Despite the medical importance of M. canis infections, there are limited in vitro data on the antifungal susceptibility to antifungal drugs, including new generation triazoles and imidazoles. OBJECTIVE The aim of the current study was to comprehensively evaluate the in vitro activity of new azoles and comparator drugs against a large panel of M. canis isolates using a microdilution assay. METHODS The in vitro susceptibility to novel triazoles and imidazoles was compared to that of other antifungal drugs using a large collection of M. canis clinical isolates (n = 208) obtained from patients and animals with dermatophytosis in Iran, France and Turkey. RESULTS All isolates exhibited high susceptibility to the majority of the tested antifungal agents. However, luliconazole, lanoconazole and efinaconazole, as well as econazole, demonstrated superior activity against all strains in comparis on with the other drugs. CONCLUSION FDA-approved antifungal drugs, that is luliconazole, efinaconazole and lanoconazole, showed the highest antifungal activity and should be promising candidates for the treatment of dermatophytosis caused by M canis. However, their therapeutic effectiveness remains to be determined in clinical settings.
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Affiliation(s)
- Mahdi Abastabar
- Invasive Fungi Research Center, School of Medicine, Mazandaran University of Medical Sciences.,Department of Medical Mycology, Mazandaran University of Medical Sciences
| | - Ali Jedi
- Department of Medical Mycology, Mazandaran University of Medical Sciences.,Student Research Committee, Mazandaran University of Medical Sciences
| | - Jacques Guillot
- Department of Parasitology, Mycology, Dermatology, EA Dynamyc, UPEC, Ecole nationale vétérinaire d'Alfort
| | - Macit Ilkit
- Department of Medical Microbiology, Faculty of Medicine, University of Çukurova
| | - Samaneh Eidi
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad
| | - Mohammad Taghi Hedayati
- Invasive Fungi Research Center, School of Medicine, Mazandaran University of Medical Sciences.,Department of Medical Mycology, Mazandaran University of Medical Sciences
| | - Tahereh Shokohi
- Invasive Fungi Research Center, School of Medicine, Mazandaran University of Medical Sciences.,Department of Medical Mycology, Mazandaran University of Medical Sciences
| | - Roshanak Daie Ghazvini
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences
| | - Ali Rezaei-Matehkolaei
- Department of Medical Mycology, Faculty of Medicine/Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences
| | - Farzad Katiraee
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Javad Javidnia
- Student Research Committee, Mazandaran University of Medical Sciences
| | - Bahram Ahmadi
- Department of Medical Laboratory Sciences, Faculty of Paramedical, Bushehr University of Medical Sciences
| | - Hamid Badali
- Invasive Fungi Research Center, School of Medicine, Mazandaran University of Medical Sciences.,Department of Medical Mycology, Mazandaran University of Medical Sciences
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Gnat S, Nowakiewicz A, Zięba P. TAXONOMY OF DERMATOPHYTES – THE CLASSIFICATION SYSTEMS MAY CHANGE BUT THE IDENTIFICATION PROBLEMS REMAIN THE SAME. ADVANCEMENTS OF MICROBIOLOGY 2019. [DOI: 10.21307/pm-2019.58.1.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Brosh-Nissimov T, Ben-Ami R, Astman N, Malin A, Baruch Y, Galor I. An Outbreak of Microsporum canis infection at a military base associated with stray cat exposure and person-to-person transmission. Mycoses 2018; 61:472-476. [PMID: 29570867 DOI: 10.1111/myc.12771] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/12/2018] [Indexed: 11/28/2022]
Abstract
Tinea corporis caused by Microsporum canis is usually associated with exposure to animals, but outbreaks with anthropophilic transmission were described. A large outbreak in a military base was investigated. We investigated the outbreak's source and risk factors for infection in order to contain and eliminate it. All staff-members at the base were interviewed and examined. A case-control analysis of symptomatic patients was used to elucidate risk factors. Stray cats were captured and sampled. M. canis isolated from skin and fur specimens of patients and cats were genotyped by microsatellite sequencing. Fifty-three of 502 staff-members were symptomatic. Logistic regression showed risk associated with female gender, cat contact at base and performance of guarding duty. Multiple stray cats were found at the base. M. canis isolates from 4 cats and 4 patients had an identical genotype, while 2 patients had different genotypes. We describe the largest M. canis outbreak reported until now. Epidemiological and phylogenetic tools were used to investigate the source of the outbreak. Multiple exposures to stray cats caused infection of mainly young female soldiers performing guarding duty. Other persons were infected by person-to-person transmission. These findings aided in the termination of the outbreak.
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Affiliation(s)
- Tal Brosh-Nissimov
- Israel Defense Forces Medical Corps, Ramat Gan, Israel.,Infectious Diseases Unit, Assuta Ashdod University Hospital, Ashdod, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ronen Ben-Ami
- Infectious Diseases Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nadav Astman
- Israel Defense Forces Medical Corps, Ramat Gan, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Dermatology, Sheba Medical Center, Tel Hashomer, Israel
| | - Alex Malin
- Israel Defense Forces Medical Corps, Ramat Gan, Israel
| | - Yaron Baruch
- Israel Defense Forces Medical Corps, Ramat Gan, Israel
| | - Inbal Galor
- Israel Defense Forces Medical Corps, Ramat Gan, Israel
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11
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Infection by Microsporum canis in Paediatric Patients: A Veterinary Perspective. Vet Sci 2017; 4:vetsci4030046. [PMID: 29056704 PMCID: PMC5644651 DOI: 10.3390/vetsci4030046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/11/2017] [Accepted: 09/14/2017] [Indexed: 11/20/2022] Open
Abstract
Microsporum canis is a dermatophyte fungus of which cats and dogs are recognized as the natural hosts. M. canis is also easily transmitted to humans, causing lesions to the glabrous skin (tinea corporis) and to the head (tinea capitis). The present study describes some cases of infection with M. canis in children from a veterinary perspective, highlighting some important features of this clinical entity (e.g., the necessity to identify the animal source of infection with appropriate diagnostic tests; the fact that infected cats may present with no or atypical dermatological signs; and the importance of the environment as a fungal reserve).
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12
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de Hoog GS, Dukik K, Monod M, Packeu A, Stubbe D, Hendrickx M, Kupsch C, Stielow JB, Freeke J, Göker M, Rezaei-Matehkolaei A, Mirhendi H, Gräser Y. Toward a Novel Multilocus Phylogenetic Taxonomy for the Dermatophytes. Mycopathologia 2016; 182:5-31. [PMID: 27783317 PMCID: PMC5283515 DOI: 10.1007/s11046-016-0073-9] [Citation(s) in RCA: 358] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/28/2016] [Indexed: 12/16/2022]
Abstract
Type and reference strains of members of the onygenalean family Arthrodermataceae have been sequenced for rDNA ITS and partial LSU, the ribosomal 60S protein, and fragments of β-tubulin and translation elongation factor 3. The resulting phylogenetic trees showed a large degree of correspondence, and topologies matched those of earlier published phylogenies demonstrating that the phylogenetic representation of dermatophytes and dermatophyte-like fungi has reached an acceptable level of stability. All trees showed Trichophyton to be polyphyletic. In the present paper, Trichophyton is restricted to mainly the derived clade, resulting in classification of nearly all anthropophilic dermatophytes in Trichophyton and Epidermophyton, along with some zoophilic species that regularly infect humans. Microsporum is restricted to some species around M. canis, while the geophilic species and zoophilic species that are more remote from the human sphere are divided over Arthroderma, Lophophyton and Nannizzia. A new genus Guarromyces is proposed for Keratinomyces ceretanicus. Thirteen new combinations are proposed; in an overview of all described species it is noted that the largest number of novelties was introduced during the decades 1920–1940, when morphological characters were used in addition to clinical features. Species are neo- or epi-typified where necessary, which was the case in Arthroderma curreyi, Epidermophyton floccosum, Lophophyton gallinae, Trichophyton equinum, T. mentagrophytes, T. quinckeanum, T. schoenleinii, T. soudanense, and T. verrucosum. In the newly proposed taxonomy, Trichophyton contains 16 species, Epidermophyton one species, Nannizzia 9 species, Microsporum 3 species, Lophophyton 1 species, Arthroderma 21 species and Ctenomyces 1 species, but more detailed studies remain needed to establish species borderlines. Each species now has a single valid name. Two new genera are introduced: Guarromyces and Paraphyton. The number of genera has increased, but species that are relevant to routine diagnostics now belong to smaller groups, which enhances their identification.
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Affiliation(s)
- G Sybren de Hoog
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands. .,Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands. .,Basic Pathology Department, Federal University of Paraná State, Curitiba, Paraná, Brazil. .,Peking University Health Science Center, Research Center for Medical Mycology, Beijing, China. .,Shanghai Institute of Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, China. .,Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Karolina Dukik
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Michel Monod
- Department of Dermatology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Ann Packeu
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Dirk Stubbe
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Marijke Hendrickx
- Mycology and Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - Christiane Kupsch
- Institute of Microbiology and Hygiene, University Medicine Berlin - Charité, Berlin, Germany
| | - J Benjamin Stielow
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Thermo Fisher Scientific, Landsmeer, The Netherlands
| | - Joanna Freeke
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands.,Thermo Fisher Scientific, Landsmeer, The Netherlands
| | - Markus Göker
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Brunswick, Germany
| | - Ali Rezaei-Matehkolaei
- Health Research Institute, Infectious and Tropical Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Medical Mycology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Mirhendi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Yvonne Gräser
- Institute of Microbiology and Hygiene, University Medicine Berlin - Charité, Berlin, Germany.
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13
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Zhan P, Li D, Wang C, Sun J, Geng C, Xiong Z, Seyedmousavi S, Liu W, de Hoog GS. Epidemiological changes in tinea capitis over the sixty years of economic growth in China. Med Mycol 2015; 53:691-8. [PMID: 26260745 DOI: 10.1093/mmy/myv057] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 06/11/2015] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Tinea capitis is a fungal infection of the scalp occurring commonly in children. Historical data indicate that clinical manifestations and the spectrum of etiologic agents vary greatly with geography, as well as socioeconomic affected populations. OBJECTIVE To study the possible connection between socioeconomic status, the disease patterns and the variability of etiological agents. METHODS We reviewed tinea capitis in China through literature since 1956. The disease pattern was correlated with economic and public health management protocols. Historical data on fungal identification were mostly obtained by morphology. The accuracy of these historical results was further confirmed by use of both morphological and ITS identification on a control set of 90 isolates collected recently from local hospital. RESULTS Full agreement of the two identification methods implies that data from the literature were sufficiently reliable to allow comparison across reported cases. In sum, 88 papers involving 25 administrative provinces and municipalities with 38,962 clinical strains met the inclusion criteria of this review. Zoophilic species Microsporum canis is the most prevalent agent within large, modernized cities in China today accounting for over 80% of infections. In contrast, anthropophilic dermatophytes, particularly Trichophyton violaceum, are geographically endemic only in some southeastern and northwestern regions. CONCLUSION Economic development and urbanization of cities favor a shift of etiological agents from anthroponoses to zoonoses in contemporary China. Pets are becoming the most likely sources of infection in modern lifestyles, replacing the earlier human-to-human transmission mode. However, the latter transmission mode is still prevalent in less developed areas lacking adequate social and public health facilities.
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Affiliation(s)
- Ping Zhan
- Institute of Dermatology, Chinese Academy of Medical Science & Peking Union Medical College, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing 210042, China Dermatology Hospital of Jiangxi Province, Jiangxi Provincial institute of Dermatology, Nanchang 330001, China CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Dongmei Li
- Institute of Dermatology, Chinese Academy of Medical Science & Peking Union Medical College, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing 210042, China Georgetown University Medical Center, Department of Microbiology / Immunology, Washington, DC 20057, United States
| | - Chong Wang
- Institute of Dermatology, Chinese Academy of Medical Science & Peking Union Medical College, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing 210042, China Dermatology Department, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009 China
| | - Jiufeng Sun
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Chengfang Geng
- Dermatology Hospital of Jiangxi Province, Jiangxi Provincial institute of Dermatology, Nanchang 330001, China
| | - Zhiwei Xiong
- Dermatology Hospital of Jiangxi Province, Jiangxi Provincial institute of Dermatology, Nanchang 330001, China
| | - Seyedmojtaba Seyedmousavi
- Department of Medical Microbiology, Radboudumc, Nijmegen, The Netherlands Department of Medical Microbiology and Infectious Diseases, Erasmus MC, The Netherlands
| | - Weida Liu
- Institute of Dermatology, Chinese Academy of Medical Science & Peking Union Medical College, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing 210042, China
| | - G Sybren de Hoog
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
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14
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Grunwald M, Amichai B, Shemer A. Fingertip contamination after a brief touch of tinea capitis lesions caused byMicrosporum canis. Br J Dermatol 2014; 172:291-2. [DOI: 10.1111/bjd.13223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M.H. Grunwald
- Soroka University Medical Center; Ben-Gurion University of the Negev; Beer-Sheva Israel
| | - B. Amichai
- Department of Dermatology; Meir Medical Center; Kfar-Saba Israel
- Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
| | - A. Shemer
- Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
- Department of Dermatology; Sheba Medical Center; Tel-Hashomer Israel
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