Tamás Sréter

Tamás Sréter
National Public Health Center · National Refernce Laboratory of Parasitology

DVM, PhD
Head of National Reference Laboratory for Human Parasitic Diseases in Hungary

About

100
Publications
11,521
Reads
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2,571
Citations
Additional affiliations
April 2001 - September 2021
National Food Chain Safety Office
Position
  • Head of Laboratory
Description
  • The National Reference Laboratory for Parasites, Fish and Bee Diseases is a veterinary laboratory accredited to ISO 17025. We aim to offer a diagnostic and national reference laboratory facility for the diagnosis of parasitic infections of animals as well as fish and bee diseases in Hungary. We are also strongly committed to research, to the provision of training for veterinary professionals and to promoting the One Health approach.
April 1998 - March 2001
University of Veterinary Medicine Budapest
Position
  • Professor (Associate)
Description
  • The mission of the Department of Parasitology and Zoology states three goals namely, to provide education and training in all aspects of parasitic diseases and vectors, to conduct basic and applied researches in parasitic diseases and vectors, and to provide laboratory services in the diagnosis of parasitic diseases.
November 1995 - March 1998
Pfizer
Position
  • Technical and Marketing Manager
Education
September 1993 - October 1997
University of Veterinary Medicine Budapest
Field of study
  • veterinary parasitology
September 1984 - October 1989
University of Veterinary Medicine Budapest
Field of study
  • veterinary science

Publications

Publications (100)
Article
In the past 15 years, onchocercosis has been reported with increasing frequency in dogs in Europe and the United States, and 64 cases have been described so far. According to some authors, the Onchocerca sp. responsible for canine cases spills over from domestic or wild ungulates into dogs. However, canine Onchocerca does not match any of the descr...
Article
In Europe, Dirofilaria immitis persists mainly in the southern countries with a Mediterranean climate. Because spreading of heartworms from these countries towards the northern ones could be observed in the past decades, necropsy records of 4076 Hungarian dogs were reviewed for heartworm infections. The first autochthonous canine D. immitis case wa...
Article
A study was conducted to investigate genetic diversity of Echinococcus isolates collected in Hungarian slaughterhouses between 2015 and 2018. Organs of 219 animals with suspected hydatidosis were collected during routine meat inspection and sent to our laboratory. Echinococcus infection was confirmed in 65 animals. These results indicate that preva...
Article
Full-text available
European beaver (Castor fiber L. 1758) is the biggest rodent species living in Europe. Beavers are semi-aquatic animals; they are defecating directly into the water; thus, they have an important role in spreading parasites related to water (e.g., protozoa and flukes). The first specimens of this once extinct rodent species in Hungary turned up in S...
Article
The cestode Echinococcus multilocularis is the causative agent of alveolar echinococcosis, a severe helminthic zoonotic disease distributed in the Northern Hemisphere. The lifecycle of the parasite is mainly sylvatic, involving canid and rodent hosts. The absence of genetic data from most eastern European countries is a major knowledge gap, affecti...
Article
Full-text available
Background Human alveolar echinococcosis (AE) caused by Echinococcus multilocularis is an underreported, often misdiagnosed and mistreated parasitic disease mainly due to its low incidence. The aim of this study was to describe the epidemiological and clinical characteristics of human AE patients in Hungary for the first time. Method Between 2003...
Article
Full-text available
Alveolar echinococcosis caused by metacestode stage of the tapeworm Echinococcus multilocularis is considered as one of the most pathogenic zoonoses in temperate and arctic regions. To more thoroughly ascertain genetic diversity in E. multilocularis tapeworms from Europe and to indicate transmission patterns of parasite, 25 isolates from a contiguo...
Article
Full-text available
Introduction This paper reviews the current knowledge and understanding of Cryptosporidium spp. and Giardia spp. in humans, animals and the environment in 10 countries in the eastern part of Europe: Bosnia and Herzegovina, Croatia, Czech Republic, Estonia, Hungary, Latvia, Poland, Romania, Serbia and Slovenia. Methods: Published scientific papers a...
Article
Although some early and small-scale studies on the midge fauna were carried out in Hungary in the 1930s, the interpretation of these data is difficult. Therefore, a monitoring programme was initiated after the first bluetongue outbreaks in Hungary. During this programme (2008−2012, 2014−2015) 669 trap contents were collected from 82 collection site...
Article
To investigate the spatial distribution of the Trichinella spp. and the factors influencing their circulation in Hungary, 4086 red foxes (Vulpes vulpes) and 0.32 million wild boars (Sus scrofa) were tested for Trichinella spp. infection in Hungary from 2006 to 2014. Trichinella spp. larvae from 86 (2.1%) foxes and 58 (0.02%) wild boars were identif...
Article
Human alveolar echinococcosis, caused by the tapeworm Echinococcus multilocularis, is the most pathogenic parasitozoonosis in the temperate and arctic region of Europe. E. multiloculoris adult worms were detected in foxes of 16 Hungarian counties and in the suburban areas of the captial, Budapest. The prevalence of infection was 10.7% and 7.9%, the...
Article
Mesocestoides spp. are zoonotic cestodes of wild and domesticated carnivores. Although the adult stages are relatively harmless intestinal parasites, the metacestode stages (tetrathyridia) can be responsible for life-threatening peritonitis and pleuritis in several species including dogs, cats, non-human primates and probably man. The aim of the pr...
Article
Full-text available
Abstract Trichinella spiralis and Trichinella britovi are the two most common species of the genus Trichinella persisting in the European wildlife. To investigate the spatial distribution of these Trichinella spp. and the factors influencing their circulation in Hungary, 3304 red foxes (Vulpes vulpes) and 0.29 million wild boars (Sus scrofa) were t...
Article
Echinococcus multilocularis is one of the most pathogenic zoonotic parasites in the temperate and arctic region of the Northern Hemisphere. For estimating the potential risk of human infection in endemic areas, reliable antemortem methods are needed to detect the parasite in carnivore definitive hosts. The sensitivity of routine flotation technique...
Article
Alaria alata is a potential zoonotic parasite, which is widely distributed in Eurasia. To assess the risk of human infection, it is important to know the spatial distribution pattern of the parasite and factors influencing this pattern. To investigate these relationships, 1612 red fox (Vulpes vulpes) carcasses were randomly collected from the whole...
Article
The genetic diversity of Echinococcus granulosus sensu stricto (s.s.) metacestodes from four European countries was evaluated by the DNA sequence analysis of the cytochrome c oxidase subunit 1 (cox1) mitochondrial gene. Of the 312 organisms investigated, 132 were from Bulgaria, 35 from Hungary, 89 from Italy and 56 from Romania. Considerable intras...
Article
Trichinellosis is a foodborne disease caused by the consumption of raw meat and raw meat-derived products from swine, horse and some game animals infected with nematode worms of the genus Trichinella. Between June 2006 and February 2011, 16 million domestic pigs and 0.22 million wild boars (Sus scrofa) were tested for Trichinella sp. in Hungary. Tr...
Article
Human alveolar echinococcosis, caused by the tapeworm Echinococcus multilocularis, is the most pathogenic helminthic zoonosis in the temperate and arctic region of Europe. Between November 2008 and February 2009, 840 red fox (Vulpes vulpes) carcasses, were randomly collected from the whole Hungarian territory. The intestinal mucosa from all the fox...
Article
Francisella tularensis, the causative agent of tularemia, has been detected in ixodid ticks in some regions of North America, Europe, and Asia. In the present study, 245 Dermacentor reticulatus, 211 Ixodes ricinus, and 194 Haemaphysalis concinna adults from Hungary were tested for the presence of F. tularensis by polymerase chain reaction (PCR) ass...
Article
The red fox (Vulpes vulpes) is considered one of the main reservoir of Trichinella spp. in Europe. As limited information on Trichinella infection in wildlife of Hungary is available, 2116 red foxes, representing more than 3% of the estimated fox population of the country, were screened to detect Trichinella larvae by a digestion method. Trichinell...
Article
In the past 15 years, subconjunctival onchocercosis has been reported from 63 dogs in south-western United States (Arizona, California, Utah) and Southern and Central Europe (Germany, Greece, Hungary, Portugal, Switzerland). To reveal the taxonomic status of the parasite responsible for these infections, fragments of the mitochondrial cytochrome ox...
Article
Fleas (95 Pulex irritans, 50 Ctenocephalides felis, 45 Ctenocephalides canis) and ixodid ticks (223 ixodes ricinus, 231 Dermacentor reticulatus, 204 Haemaphysalis concinna) were collected in Hungary and tested, in assays based on PCR, for Bartonella infection. Low percentages of P. irritans (4.2%) and C. felis (4.0%) were found to be infected. The...
Article
A survey was carried out over a 4-year period to describe the temporal distribution of three 'anthropophilic' tick species, Ixodes ricinus, Dermacentor reticulatus and Haemaphysalis concinna in Hungary. Altogether 4658 adult ticks belonging to the three species were collected from 1931 red foxes (Vulpes vulpes) killed in an area of about 70,000 km(...
Article
Three common European 'anthrophilic' ticks, Ixodes ricinus, Haemaphysalis concinna and Dermacentor reticulatus, were collected in Hungary and tested, in assays based on nested PCR, for rickettsiae of the spotted-fever group. Low percentages of I. ricinus (2.7%) and H. concinna (1.0%) and a high percentage of D. reticulatus (26.8%) were found to be...
Article
Rickettsia helvetica belonging to spotted fever group rickettsiae was recently detected by polymerase chain reaction followed by sequencing in European sheep ticks (Ixodes ricinus) from Hungary. Current knowledge on these rickettsiae and the clinical and diagnostic aspects of R. helvetica infection is summarized. In acute cases, R. helvetica is gen...
Article
Babesia microti and Anaplasma phagocytophilum was recently reported with a minimum prevalence of 0.9 and 1.3% in Hungary based on the PCR-sequencing analysis of 452 European sheep ticks (Ixodes ricinus). These results and the epidemiological data of the neighbouring countries indicate that human cases caused by these pathogens may occur in the coun...
Article
A survey was conducted to investigate the spatial distribution of Ixodes ricinus and Dermacentor reticulatus in Hungary and to compare these data with the results of a previous large-scale survey. In the survey conducted in the 1950s, D. reticulatus adults were detected in two isolated areas of two counties, and the presence of these ticks in the c...
Article
Until the beginning of the nineties, the control of trichinellosis was thought to be a solved problem in Europe. However, as a consequence of social, economical and ecological changes in Central Eastern and Eastern Europe in the past decade, trichinellosis became a re-emerging infectious disease in the region. Molecular genetic studies demonstrated...
Article
Human alveolar echinococcosis, caused by the metacestode stage of Echinococcus multilocularis, is one of the most dangerous zoonoses in the temperate and arctic areas of northern hemisphere. The mortality of the disease exceeds 95% in untreated or inadequately treated patients. In the past three decades, the spread of this parasite was observed in...
Article
Full-text available
To the Editor: Echinococcus multilocularis infection is one of the most dangerous zoonoses in the Northern Hemisphere and causes more human death than rabies in Europe. Recent data indicate that E. multilocularis infection is spreading geographically and is being transmitted at an increasing rate in Europe (Figure). Since 1995, the parasite has bee...
Article
Anaplasma phagocytophilum (formerly Ehrlichia phagocytophila, Ehrlichia equi and Anaplasma phagocytophila) is the causative agent of granulocytic ehrlichiosis (anaplasmosis) in humans, horses, sheep, cattle, dogs and cats. In the present study, 452 European sheep ticks (Ixodes ricinus) collected from 100 red foxes (Vulpes vulpes) in Hungary were te...
Article
A survey was carried out to investigate the prevalence and worm burden of gastrointestinal parasite infections in 100 red foxes (Vulpes vulpes) in Hungary. Based on prevalence, intensity and pathogenicity data, coccidia (dominance of Isospora spp. with a prevalence of 20%), trematodes (dominance of Alaria alata with 48%) and cestodes (dominance of...
Article
Recently, sporadic cases of subconjunctival Onchocerca infection have been reported in dogs in Greece and Hungary. Herein we report further cases from Greece and the results of the molecular analysis of Onchocerca sp. removed from Greek dogs and its Wolbachia endosymbionts. Twenty dogs of various breeds, 1-11 years of age with subconjunctival oncho...
Article
A survey was carried out to investigate the prevalence and worm burden of extraintestinal nematodes in 100 red foxes (Vulpes vulpes) of Hungary. The overall prevalence of nematode infections of the respiratory tract was 76%. Eucoleus aerophilus (Capillaria aerophila) was the predominant species (66%), followed by Crenosoma vulpis (24%), Eucoleus (C...
Article
A survey was carried out to investigate the ectoparasite infestations of 100 red foxes (Vulpes vulpes) in Hungary. The overall prevalence of flea and tick infestation was high (62 and 86% with the dominance of the anthropophil Pulex irritans and Ixodes ricinus), but the number of parasites was low to moderate. Felicola vulpis was not found in the p...
Article
A survey was carried out to investigate the incidence of parasites in 100 red foxes (Vulpes vulpes) of Hungary. Five foxes harbored adult worms of Echinococcus multilocularis. The parasite identification was based on morphology and confirmed by both a species-specific nested PCR assay and experimental infection of laboratory mice. The probable spre...
Article
Full-text available
Echinococcus multilocularis, the causative agent of human alveolar echinococcosis, is reported for the first time in Red Foxes (Vulpes vulpes) in Hungary. This parasite may be spreading eastward because the population of foxes has increased as a consequence of human interventions, and this spread may result in the emergence of alveolar echinococcos...
Article
Cryptosporidia, widely distributed protozoan parasites of vertebrates have recently attracted increasing interest due to several serious waterborne outbreaks, the life-threatening nature of infection in immunocompromised patients, and the realization of economic losses caused by these pathogens in livestock. Genetic polymorphism within Cryptosporid...
Article
The morphology of Onchocerca lupi, responsible for canine ocular onchocercosis, is unique within the genus. Earlier analyses of the 5S ribosomal RNA gene spacer region sequence of the parasite and the 16S ribosomal RNA gene sequence of its Wolbachia endosymbiotic bacteria (Rickettsiales) supported the morphological and biological arguments that O....
Article
In recent decades, sporadic cases of ocular Onchocerca species infection have been reported in dogs in the USA and Europe. In the acute stage of the disease severe inflammation of the ocular and periocular tissues was observed. In chronic cases, the strongly coiled, gravid nematodes were incorporated in pea- to bean-sized granulomatous nodules in v...
Article
In the past few decades, 10 cases of cryptic, zoonotic onchocerciasis, including two subconjunctival infections, have been reported in man. In the majority of cases, Onchocerca cervicalis, O. gutturosa or O. dewittei, which normally infect horses, cattle and wild boar, respectively, were responsible for the lesions. However, the taxonomic status of...
Article
It was recently demonstrated that Wolbachia intracellular bacteria (alpha 2 proteobacteria, Rickettsiales) living in filarial nematodes are obligatory symbionts of their hosts. Herein, we report the electron microscopic and 16S ribosomal DNA-based (16S rDNA) identification of the endobacteria harboring in Onchocerca lupi. The worm nodules containin...
Article
The present study was undertaken to characterize the oocyst morphology, host specificity, organ location, virulence, and sequences of the small subunit ribosomal RNA, 70-kDa heat shock protein, and oocyst wall protein genes of Cryptosporidium baileyi, and to compare this strain with other Cryptosporidium species. This study also aims to serve as a...
Article
Two battery tests were conducted to study the anticryptosporidial prophylactic efficacy of the 2 commercially available antibiotics, enrofloxacin and paromomycin. The efficacy of enrofloxacin was 52% at the recommended level, which could not be increased, using twice the recommended dose. At the recommended levels, paromomycin reduced the oocyst ou...
Article
Two battery tests were conducted to study the anticryptosporidial prophylactic efficacy of the 2 commercially available antibiotics, enrofloxacin and paromomycin. The efficacy of enrofloxacin was 52% at the recommended level, which could not be increased, using twice the recommended dose. At the recommended levels, paromomycin reduced the oocyst ou...
Article
In the past decades, sporadic cases of ocular Onchocerca infection have been reported in canids in US and Europe. The present study was undertaken to provide a detailed description of the morphologic characteristics of adults and microfilariae and to characterize the 5S ribosomal rRNA gene (5S rDNA) spacer sequences of Onchocerca lupi causing canin...
Article
Four adult dogs that had spent their entire life in Hungary, were found to be infected with filaroid nematodes of the genus Onchocerca. The morphology and location of the parasites as well as pathological lesions were similar to those described earlier in the one Hungarian and five US dogs. Only moderate morphological differences were noted between...
Article
An adult male mongrel dog that had spent its entire life in Hungary, was found to have infection with filaroid nematodes of the genus Onchocerca. The gravid male and female parasites were embedded in bean-sized granulomatous masses on the conjunctiva and the sclera of both eyes. The cuticle of females consisted of two separated layers in longitudin...
Article
Both male and female Foleyella furcata were found in the subcutaneous tissue and abdominal cavity of an adult male wild-caught Senegalese chameleon (Chamaeleo senegalensis). This nematode species is endemic to Madagascar but has never been recorded from the continent of Africa. Prior to the chameleon's death, a migrating worm was seen under the ski...
Article
This study was undertaken in order to characterize a Cryptosporidium muris-like parasite isolated from cattle in Hungary and to compare this strain with other Cryptosporidium species. To date, the large-type oocysts isolated from cattle were considered as C. muris described from several mammals. The size, form, and structure of the oocysts of the H...
Article
In order to evaluate the effect of in ovo vaccination on avian cryptosporidiosis, two doses (1 and 10microg) of Cryptosporidium baileyi oocyst extract (OE) were injected into the amnionic sac of embryonated, specific pathogen-free chicken eggs. After hatching these birds as well as infected controls (IC) were inoculated with 8x10(5) C. baileyi oocy...
Article
The morphology, life cycle, maintenance, host specificity, incidence of Cryptosporidium species infecting birds, as well as the epidemiology, clinical signs, pathology, immunology, diagnosis, therapy, and control of avian cryptosporidiosis are reviewed. Based on the accepted criteria used for differentiation of Cryptosporidium isolates into valid s...
Article
This study was undertaken in order to characterizeCryptosporidium meleagridis isolated from a turkey in Hungary and to compare the morphologies, host specificities, organ locations, and small-subunit RNA (SSU rRNA) gene sequences of this organism and other Cryptosporidium species. The phenotypic differences between C. meleagridis andCryptosporidium...
Article
Three battery tests were conducted to study the anticryptosporidial efficacy of the 2 commercially available anticoccidial triazinone derivates, diclazuril and toltrazuril, and a garlic extract. At the recommended level, diclazuril reduced the oocyst output of birds by 14.6%. The efficacy of toltrazuril was 52.1% at the recommended level, which cou...
Data
On Aug 3, 1999 this sequence version replaced gi:4886314.
Data
On Aug 3, 1999 this sequence version replaced gi:4886313.
Article
From subcutaneous tissue of a 7-year-old female Irish Setter and that of a 7-year-old male Labrador Retriever, a 12.5 cm and a 17.5 cm long nematode was removed surgically. On the basis of the morphological features, the worms were identified as gravid females of Dirofilaria repens. Blood samples from 101 dogs in the Tolna County were examined for...