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Gray J, Kahl O, Zintl A. Pathogens transmitted by Ixodes ricinus. Ticks Tick Borne Dis 2024; 15:102402. [PMID: 39368217 DOI: 10.1016/j.ttbdis.2024.102402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2024] [Revised: 09/24/2024] [Accepted: 09/24/2024] [Indexed: 10/07/2024]
Abstract
Ixodes ricinus is the most important tick vector in central and western Europe and one of the most researched parasites. However, in the published literature on the tick and the pathogens it transmits, conjecture about specific transmission cycles and the clinical significance of certain microbes is not always clearly separated from confirmed facts. This article aims to present up-to-date, evidence-based information about the well-researched human pathogens tick-borne encephalitis virus, louping-ill virus, Anaplasma phagocytophilum, Borrelia burgdorferi sensu lato and several Babesia species, with a focus on their development in the tick, transmission dynamics and the competent reservoir hosts that support their circulation in the environment. Borrelia miyamotoi, Neoehrlichia mikurensis, Rickettsia helvetica and Rickettsia monacensis, which are much less common causes of disease but may affect immunocompromised patients, are also briefly discussed. Finally, the possible role of I. ricinus in the transmission of Coxiella burnetii, Francisella tularensis, Bartonella spp. and Spiroplasma ixodetis is reviewed.
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Affiliation(s)
- Jeremy Gray
- UCD School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland.
| | | | - Annetta Zintl
- UCD School of Veterinary Sciences, University College Dublin, Belfield, Dublin 4, Ireland.
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Flattery A, McKiernan F, Browne J, Gray J, Zaid T, O'Connor J, Zintl A. The prevalence and distribution of Anaplasma phagocytophilum genotypes in Ixodes ricinus nymphs collected from farm- and woodland sites in Ireland. Ticks Tick Borne Dis 2022; 13:101928. [DOI: 10.1016/j.ttbdis.2022.101928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/01/2022] [Accepted: 02/21/2022] [Indexed: 10/19/2022]
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3
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Impact of climate factors on the seasonal activity of ticks and temporal dynamics of tick-borne pathogens in an area with a large tick species diversity in Slovakia, Central Europe. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00902-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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El Hamiani Khatat S, Daminet S, Duchateau L, Elhachimi L, Kachani M, Sahibi H. Epidemiological and Clinicopathological Features of Anaplasma phagocytophilum Infection in Dogs: A Systematic Review. Front Vet Sci 2021; 8:686644. [PMID: 34250067 PMCID: PMC8260688 DOI: 10.3389/fvets.2021.686644] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 05/17/2021] [Indexed: 11/13/2022] Open
Abstract
Anaplasma phagocytophilum is a worldwide emerging zoonotic tick-borne pathogen transmitted by Ixodid ticks and naturally maintained in complex and incompletely assessed enzootic cycles. Several studies have demonstrated an extensive genetic variability with variable host tropisms and pathogenicity. However, the relationship between genetic diversity and modified pathogenicity is not yet understood. Because of their proximity to humans, dogs are potential sentinels for the transmission of vector-borne pathogens. Furthermore, the strong molecular similarity between human and canine isolates of A. phagocytophilum in Europe and the USA and the positive association in the distribution of human and canine cases in the USA emphasizes the epidemiological role of dogs. Anaplasma phagocytophilum infects and survives within neutrophils by disregulating neutrophil functions and evading specific immune responses. Moreover, the complex interaction between the bacterium and the infected host immune system contribute to induce inflammatory injuries. Canine granulocytic anaplasmosis is an acute febrile illness characterized by lethargy, inappetence, weight loss and musculoskeletal pain. Hematological and biochemistry profile modifications associated with this disease are unspecific and include thrombocytopenia, anemia, morulae within neutrophils and increased liver enzymes activity. Coinfections with other tick-borne pathogens (TBPs) may occur, especially with Borrelia burgdorferi, complicating the clinical presentation, diagnosis and response to treatment. Although clinical studies have been published in dogs, it remains unclear if several clinical signs and clinicopathological abnormalities can be related to this infection.
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Affiliation(s)
- Sarah El Hamiani Khatat
- Department of Medicine, Surgery and Reproduction, Hassan II Institute of Agronomy and Veterinary Medicine, Rabat, Morocco
| | - Sylvie Daminet
- Department of Companion Animals, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Luc Duchateau
- Department of Comparative Physiology and Biometrics, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Latifa Elhachimi
- Department of Pathology and Veterinary Public Health, Unit of Parasitology, Hassan II Institute of Agronomy and Veterinary Medicine, Rabat, Morocco
| | - Malika Kachani
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA, United States
| | - Hamid Sahibi
- Department of Pathology and Veterinary Public Health, Unit of Parasitology, Hassan II Institute of Agronomy and Veterinary Medicine, Rabat, Morocco
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5
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Remesar S, Díaz P, Prieto A, García-Dios D, Panadero R, Fernández G, Brianti E, Díez-Baños P, Morrondo P, López CM. Molecular detection and identification of piroplasms (Babesia spp. and Theileria spp.) and Anaplasma phagocytophilum in questing ticks from northwest Spain. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:51-58. [PMID: 32757238 DOI: 10.1111/mve.12468] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/15/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
Anaplasma phagocytophilum and some piroplasm species are pathogens mainly transmitted by Ixodes ricinus. Considering that this tick species is predominant in north-western Spain, individual specimens (652 nymphs, 202 females and 202 males) and 23 larval pools were processed to determine the prevalence of these pathogens in questing I. ricinus from that region. Additionally, Dermacentor marginatus, Dermacentor reticulatus, Ixodes frontalis and Ixodes acuminatus were individually analysed. The groESL operon as well as the 16S rRNA and msp2 genes of Anaplasma were analysed. Similarly, piroplasms were identified at the 18S rRNA gene and the ITS1 of Babesia spp. and Theileria spp. Babesia venatorum (1.5%), A. phagocytophilum (0.7%), Babesia microti (0.3%) and Theileria sp. OT3 (0.2%) were detected in I. ricinus. A single I. frontalis (8.3%) tested positive to A. phagocytophilum. Although a low percentage of I. ricinus were infected with A. phagocytophilum and piroplasms, a potentially human pathogenic variant of A. phagocytophilum was detected, and both Babesia species found were zoonotic. Since the vector of Theileria sp. OT3 remains unknown, further investigations are needed to unravel the role of I. ricinus in the transmission of this piroplasm.
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Affiliation(s)
- S Remesar
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
- Dipartimento di Scienze Veterinarie, Università degli Studi di Messina, Polo Universitario Annunziata, Messina, Italy
| | - P Díaz
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - A Prieto
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - D García-Dios
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - R Panadero
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - G Fernández
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - E Brianti
- Dipartimento di Scienze Veterinarie, Università degli Studi di Messina, Polo Universitario Annunziata, Messina, Italy
| | - P Díez-Baños
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - P Morrondo
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - C M López
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
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6
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Capligina V, Seleznova M, Akopjana S, Freimane L, Lazovska M, Krumins R, Kivrane A, Namina A, Aleinikova D, Kimsis J, Kazarina A, Igumnova V, Bormane A, Ranka R. Large-scale countrywide screening for tick-borne pathogens in field-collected ticks in Latvia during 2017-2019. Parasit Vectors 2020; 13:351. [PMID: 32665019 PMCID: PMC7362577 DOI: 10.1186/s13071-020-04219-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 07/06/2020] [Indexed: 11/10/2022] Open
Abstract
Background Tick-borne diseases are of substantial concern worldwide in both humans and animals. Several hard tick species are of medical and veterinary interest in Europe, and changes in the range of tick species can affect the spread of zoonotic pathogens. The aim of the present study was to map the current prevalence and distribution pattern of ticks and related tick-borne pathogens in Latvia, a Baltic state in northern Europe. Methods Nearly 4600 Ixodes ricinus, I. persulcatus and Dermacentor reticulatus tick samples were collected in all regions of Latvia during 2017–2019 and were screened by molecular methods to reveal the prevalence and distribution pattern of a wide spectrum of tick-borne pathogens. Results New localities of D. reticulatus occurrence were found in western and central Latvia, including the Riga region, indicating that the northern border of D. reticulatus in Europe has moved farther to the north. Among the analyzed ticks, 33.42% carried at least one tick-borne pathogen, and 5.55% of tick samples were positive for two or three pathogens. A higher overall prevalence of tick-borne pathogens was observed in I. ricinus (34.92%) and I. persulcatus (31.65%) than in D. reticulatus (24.2%). The molecular analysis revealed the presence of tick-borne encephalitis virus, Babesia spp., Borrelia spp., Anaplasma phagocytophilum and Rickettsia spp. Overall, 15 and 7 tick-borne pathogen species were detected in Ixodes spp. and D. reticulatus ticks, respectively. This is the first report of Borrelia miyamotoi in Latvian field-collected ticks. Conclusions This large-scale countrywide study provides a snapshot of the current distribution patterns of Ixodes and Dermacentor ticks in Latvia and gives us a reliable overview of tick-borne pathogens in Latvian field-collected ticks.![]()
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Affiliation(s)
- Valentina Capligina
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Maija Seleznova
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Sarmite Akopjana
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Lauma Freimane
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Marija Lazovska
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Rudolfs Krumins
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Agnija Kivrane
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Agne Namina
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Darja Aleinikova
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Janis Kimsis
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Alisa Kazarina
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Viktorija Igumnova
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Antra Bormane
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia
| | - Renate Ranka
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, Latvia.
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Remesar S, Díaz P, Prieto A, García-Dios D, Fernández G, López CM, Panadero R, Díez-Baños P, Morrondo P. Prevalence and molecular characterization of Anaplasma phagocytophilum in roe deer (Capreolus capreolus) from Spain. Ticks Tick Borne Dis 2019; 11:101351. [PMID: 31822398 DOI: 10.1016/j.ttbdis.2019.101351] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/06/2019] [Accepted: 12/02/2019] [Indexed: 12/13/2022]
Abstract
Anaplasma phagocytophilum can infect a wide range of vertebrates; nevertheless, some genetic variants are associated with particular species of tick vectors and animal hosts. It has been suggested that roe deer (Capreolus capreolus) mainly acts as a reservoir of several A. phagocytophilum non-pathogenic variants for other animal species. The aim of this study was to determine the prevalence and identify the genetic variants of A. phagocytophilum in roe deer from Spain in order to assess host-pathogen associations and their pathogenic potential. The spleens of 212 roe deer hunted in Spain were individually collected and analysed by a commercial qPCR kit in order to detect the presence of A. phagocytophilum DNA. Positive samples were further characterized at groESL, 16S rRNA and msp2 partial genes. The possible influence of several intrinsic (age and sex) and extrinsic factors (ecological area) on A. phagocytophilum prevalence was analysed using a logistic regression. Overall, 41.5 % of the samples resulted positive to A. phagocytophilum. The percentage of infected roe deer was significantly higher in the Mediterranean and Oceanic areas than in the Continental and Mountain regions; nevertheless, prevalence was not related to age or sex. Sequence analysis at groESL and 16S rRNA genes allowed the identification of three ecotypes (I to III) and four variants ("Y", "X", "W", "I"), respectively. A high percentage of roe deer from Spain is infected with different variants of A. phagocytophilum; these results have implications for public and animal health since some of these ecotypes and variants have been previously identified in both human and animal clinical cases.
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Affiliation(s)
- Susana Remesar
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Pablo Díaz
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Alberto Prieto
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain.
| | - David García-Dios
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Gonzalo Fernández
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Ceferino M López
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Rosario Panadero
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Pablo Díez-Baños
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - Patrocinio Morrondo
- Investigación en Sanidad Animal: Galicia (Grupo INVESAGA), Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
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Zaid T, Ereqat S, Nasereddin A, Al‐Jawabreh A, Abdelkader A, Abdeen Z. Molecular characterization of Anaplasma and Ehrlichia in ixodid ticks and reservoir hosts from Palestine: a pilot survey. Vet Med Sci 2019; 5:230-242. [PMID: 30762295 PMCID: PMC6498520 DOI: 10.1002/vms3.150] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Tick-borne anaplasmosis and ehrlichiosis are clinically important emerging zoonoses usually overlooked by veterinarians and physicians alike. This study aimed at detecting and genetically characterizing Ehrlichia and Anaplasma species in ixodid ticks and their animal hosts from the West Bank, Palestine. A total of 723 ixodid ticks belonging to three genera (Rhipicephalus, Hyalomma, Haemaphysalis) were collected from dogs, sheep, goats and camels. In addition, 189 blood samples were collected from dogs, sheep, camels, horses and a goat from the West Bank, Palestine. All tick and blood samples were investigated for the presence of Anaplasma and Ehrlichia targeting a 345 bp fragment of the 16S rRNA gene followed by sequence analysis. The infection rate of Anaplasma spp. in ticks was 6.5% (47/723). Anaplasma platys was identified in 28% (13/47) of them. Whereas, based on a partial sequence (851 bp) of msp4 gene, 38% (18/47) were identified as A. ovis. The species of the remaining 16 positive samples (16/47, 34%) could not be identified. Simultaneously, the infection rate of Ehrlichia spp. in the ticks was 0.6% (4/723). Three of which were E. canis and one was Ehrlichia spp. The infection rate of A. platys in dogs' blood samples was 10% (13/135), while it was 1.5% (2/135) for E. canis. The infection rate of Anaplasma in sheep blood samples was 40% (19/47), out of which 26% (5/19) were caused by A. ovis as revealed by msp4-PCR. Implementation of purely-spatial analysis by saTScan for all cases of Anaplasma revealed two statistically significant clusters in two districts; Tubas town and Majdal-Bani-Fadil village on the western hills of the Jordan Valley. Most cases of Anaplasma (83%) were from rural areas where life cycle components (vector, host and reservoir) abundantly interact. This study is the first in Palestine to reveal the presence of Anaplasma and Ehrlichia in ticks, dogs and sheep providing crucial platform for future epidemiological surveys and control strategies in the country and region.
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Affiliation(s)
- Taher Zaid
- Biochemistry and Molecular Biology DepartmentFaculty of MedicineAl‐Quds UniversityAbu DisPalestine
- UCD School of Veterinary MedicineUniversity College DublinBelfieldIreland
| | - Suheir Ereqat
- Biochemistry and Molecular Biology DepartmentFaculty of MedicineAl‐Quds UniversityAbu DisPalestine
| | | | - Amer Al‐Jawabreh
- Al‐Quds Public Health SocietyEast JerusalemPalestine
- Arab American UniversityJeninPalestine
| | | | - Ziad Abdeen
- Al‐Quds Public Health SocietyEast JerusalemPalestine
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Razanske I, Rosef O, Radzijevskaja J, Bratchikov M, Griciuviene L, Paulauskas A. Prevalence and co-infection with tick-borne Anaplasma phagocytophilum and Babesia spp. in red deer ( Cervus elaphus) and roe deer ( Capreolus capreolus) in Southern Norway. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 8:127-134. [PMID: 30766793 PMCID: PMC6360459 DOI: 10.1016/j.ijppaw.2019.01.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 01/19/2023]
Abstract
Anaplasma phagocytophilum and Babesia spp. are causative agents of tick-borne infections that are increasingly considered as a threat to animal and public health. To assess the role of cervids in the maintenance of zoonotic pathogens in Norway, we investigated the prevalence of A. phagocytophilum and Babesia spp. in free-ranging roe deer and red deer. Initial screening of spleen samples of 104 animals by multiplex real-time PCR targeting the major surface protein (msp2) gene and 18S rRNA revealed the presence of A. phagocytophilum infection in 81.1% red deer (Cervus elaphus) and 88.1% roe deer (Capreolus capreolus), and Babesia spp. parasites in 64.9% red deer and 83.6% roe deer, respectively. Co-infections were found in 62.2% red deer and 79.9% roe deer. Nested PCR and sequence analysis of partial msp4 and 18S rRNA genes were performed for molecular characterization of A. phagocytophilum strains and Babesia species. A total of eleven A. phagocytophilum msp4 gene sequence variants were identified: five different variants were 100% identical to corresponding A. phagocytophilum sequences deposited in the GenBank database, while other six sequence variants had unique nucleotide polymorphisms. Sequence analysis of the 18S rRNA gene demonstrated the presence of multiple Babesia species, including Babesia capreoli, Babesia divergens, Babesia venatorum and Babesia odocoilei/Babesia cf. odocoilei. This study is the first report demonstrating the prevalence and molecular characterization of A. phagocytophilum strains and Babesia species in roe deer and red deer in Norway. The high infection and co-infection rates with A. phagocytophilum and Babesia spp. in red deer and roe deer suggest that these cervids may play an important role in the transmission of single and multiple pathogens.
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Affiliation(s)
- Irma Razanske
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania
| | - Olav Rosef
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania.,Rosef Field Research Station, Frolandsveien 2667, 4828, Mjåvatn, Norway
| | - Jana Radzijevskaja
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania
| | - Maksim Bratchikov
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania.,Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, M.K. Čiurlionio 21, LT-03101, Vilnius, Lithuania
| | - Loreta Griciuviene
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania
| | - Algimantas Paulauskas
- Department of Biology, Vytautas Magnus University, Vileikos 8, LT -444404, Kaunas, Lithuania
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Kohn M, Krücken J, McKay-Demeler J, Pachnicke S, Krieger K, von Samson-Himmelstjerna G. Dermacentor reticulatus in Berlin/Brandenburg (Germany): Activity patterns and associated pathogens. Ticks Tick Borne Dis 2018; 10:191-206. [PMID: 30385074 DOI: 10.1016/j.ttbdis.2018.10.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 09/03/2018] [Accepted: 10/14/2018] [Indexed: 12/11/2022]
Abstract
Dermacentor reticulatus is one of the most important European tick species. However, its spatial distribution, seasonality and regional vector role are not well known. This study aimed to gather information about abundance patterns of questing ticks and associated pathogens in unfed female adult D. reticulatus in the Berlin/Brandenburg area. Using the flagging method, questing ticks were collected at four sites in 2010-2012 and 2000 D. reticulatus were analysed regarding infection with Rickettsia, Babesia, Borrelia and Anaplasmataceae by conventional or real-time PCR. Dermacentor reticulatus showed a bimodal activity pattern: highest numbers of adult ticks were recorded between March and end of May (mean 50 ticks/h) and from mid-August until end of November (mean 102 ticks/h). During summer, almost complete inactivity was observed (mean 0.4 ticks/h). Sporadic samplings from December to February revealed tick activity also during winter (mean 47 ticks/h), which was characterised by large fluctuations. Using negative binomial regression analysis, significant influences of the variables sampling site, season and temperature on the abundance of questing D. reticulatus were determined. The parameters relative humidity and year were not of significant importance. PCR analyses showed an average prevalence of 64% for Rickettsia sp. Large differences in pathogen frequencies were observed between sampling sites (31.4-78.3%). Regression analysis demonstrated a significant influence of the sampling site but not of season and year. Examinations regarding other pathogen groups indicated prevalences of 0.25% (Borrelia sp.) and 0.05% (Anaplasmataceae) but absence of Babesia sp. Sequencing of positive samples revealed infections with Rickettsia raoultii, Borrelia miyamotoi, Borrelia afzelii and Anaplasma phagocytophilum. The study shows stable populations of D. reticulatus in Berlin/Brandenburg. People should be aware of ticks throughout the year since Ixodes ricinus is co-endemic and active in spring, summer and autumn while adult D. reticulatus are active throughout the year and even in winter during periods of frost as long as it is warming up during the day. Prevalence of R. raoultii in the present study is among the highest described for D. reticulatus. Borrelia miyamotoi was detected for the first time in D. reticulatus, illustrating the importance of screening studies to evaluate the pathogen structure in D. reticulatus populations.
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Affiliation(s)
- Mareen Kohn
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163, Berlin, Germany
| | - Jürgen Krücken
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163, Berlin, Germany
| | - Janina McKay-Demeler
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163, Berlin, Germany
| | | | - Klemens Krieger
- Bayer Animal Health GmbH, Alfred-Nobel-Straße 50, 40789, Monheim, Germany
| | - Georg von Samson-Himmelstjerna
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163, Berlin, Germany.
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Silaghi C, Nieder M, Sauter-Louis C, Knubben-Schweizer G, Pfister K, Pfeffer M. Epidemiology, genetic variants and clinical course of natural infections with Anaplasma phagocytophilum in a dairy cattle herd. Parasit Vectors 2018; 11:20. [PMID: 29310697 PMCID: PMC5759301 DOI: 10.1186/s13071-017-2570-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 12/04/2017] [Indexed: 11/13/2022] Open
Abstract
Background Anaplasma phagocytophilum is an obligate intracellular, tick-transmitted bacterium that causes granulocytic anaplasmosis in humans and several mammalian species including domestic ruminants where it is called tick-borne fever (TBF). Different genetic variants exist but their impact with regard to putative differences in host associations and pathogenicity are not yet completely understood. Methods Natural infections with A. phagocytophilum in a dairy cattle herd in Germany were investigated over one pasture season by using serology, haematology, blood chemistry and polymerase chain reaction (PCR). Sequence analysis of partial 16S rRNA, groEL, msp2 and msp4 genes of A. phagocytophilum was carried out in order to trace possible genetic variants and their relations between cattle, roe deer (Capreolus capreolus) and ticks (Ixodes ricinus) in this area. Results In total 533 samples from 58 cattle, 310 ticks, three roe deer and one wild boar were examined. Our results show (i) typical clinical symptoms of TBF in first-time infected heifers, such as high fever, reduced milk yield, lower limb oedema and typical haematological and biochemical findings such as severe leukopenia, erythropenia, neutropenia, lymphocytopenia, monocytopenia, a significant increase in creatinine and bilirubin and a significant decrease in serum albumin, γ-GT, GLDH, magnesium and calcium; (ii) a high overall prevalence of A. phagocytophilum infections in this herd as 78.9% (15/19) of the naïve heifers were real-time PCR-positive and 75.9% (44/58) of the entire herd seroconverted; and (iii) a high level of sequence variation in the analysed genes with five variants of the 16S rRNA gene, two variants of the groEL gene, three variants of the msp2 gene and four variants in the msp4 gene with certain combinations of these variants. Conclusions In cattle particular combinations of the genetic variants of A. phagocytophilum occurred, whereas three roe deer showed different variants altogether. This is indicative for a sympatric circulation of variants in this small geographical region (< 1 km2). Both re- and superinfections with A. phagocytophilum were observed in five cattle showing that infection does not result in sterile immunity. For prevention of clinical cases we suggest pasturing of young, not pregnant heifers to reduce economical losses. Electronic supplementary material The online version of this article (10.1186/s13071-017-2570-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cornelia Silaghi
- Comparative Tropical Medicine and Parasitology, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany.,Present Address: Federal Research Institute for Animal Health, Institute of Infectology, Friedrich-Loeffler-Institute, Riems, Germany
| | - Marion Nieder
- Institute for Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Carola Sauter-Louis
- Clinic for Ruminants with Ambulatory and Herd Health Services at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany.,Federal Research Institute for Animal Health, Institute of Epidemiology, Friedrich-Loeffler-Institut, Riems, Germany
| | - Gabriela Knubben-Schweizer
- Clinic for Ruminants with Ambulatory and Herd Health Services at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Kurt Pfister
- Comparative Tropical Medicine and Parasitology, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martin Pfeffer
- Institute for Animal Hygiene and Veterinary Public Health, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany.
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12
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Mongruel ACB, Benevenute JL, Ikeda P, André MR, Machado RZ, Carrasco ADOT, Seki MC. Detection of Anaplasma sp. phylogenetically related to A. phagocytophilum in a free-living bird in Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2017; 26:505-510. [DOI: 10.1590/s1984-29612017042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 06/19/2017] [Indexed: 11/21/2022]
Abstract
Abstract Wild animals play an important role in carrying vectors that may potentially transmit pathogens. Several reports highlighted the participation of wild animals on the Anaplasma phagocytophilum cycle, including as hosts of the agent. The aim of this study was to report the molecular detection of an agent phylogenetically related to A. phagocytophilum isolated from a wild bird in the Midwest of the state of Paraná, Brazil. Fifteen blood samples were collected from eleven different bird species in the Guarapuava region. One sample collected from a Penelope obscura bird was positive in nested PCR targeting the 16S rRNA gene of Anaplasma spp. The phylogenetic tree based on the Maximum Likelihood analysis showed that the sequence obtained was placed in the same clade with A. phagocytophilum isolated from domestic cats in Brazil. The present study reports the first molecular detection of a phylogenetically related A. phagocytophilum bacterium in a bird from Paraná State.
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Affiliation(s)
| | | | - Priscila Ikeda
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Brasil
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13
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Battilani M, De Arcangeli S, Balboni A, Dondi F. Genetic diversity and molecular epidemiology of Anaplasma. INFECTION GENETICS AND EVOLUTION 2017; 49:195-211. [PMID: 28122249 DOI: 10.1016/j.meegid.2017.01.021] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 01/18/2017] [Accepted: 01/19/2017] [Indexed: 11/25/2022]
Abstract
Anaplasma are obligate intracellular bacteria of cells of haematopoietic origin and are aetiological agents of tick-borne diseases of both veterinary and medical interest common in both tropical and temperate regions. The recent disclosure of their zoonotic potential has greatly increased interest in the study of these bacteria, leading to the recent reorganisation of Rickettsia taxonomy and to the possible discovery of new species belonging to the genus Anaplasma. This review is particularly focused on the common and unique characteristics of Anaplasma marginale and Anaplasma phagocytophilum, with an emphasis on genetic diversity and evolution, and the main distinguishing features of the diseases caused by the different Anaplasma spp. are described as well.
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Affiliation(s)
- Mara Battilani
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, Bo, Italy.
| | - Stefano De Arcangeli
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, Bo, Italy
| | - Andrea Balboni
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, Bo, Italy
| | - Francesco Dondi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano Emilia, Bo, Italy
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14
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Mongruel ACB, Benevenute JL, André MR, Carrasco ADOT, Machado RZ, Seki MC. Molecular Characterization of Anaplasma sp. in Free-Living Gray Brockets (Mazama gouazoubira). Vector Borne Zoonotic Dis 2016; 17:165-171. [PMID: 27992293 DOI: 10.1089/vbz.2016.2026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Bacteria in the genus Anaplasma are responsible for diseases in animals and humans. Studies carried out in Brazil have demonstrated that Brazilian deer are able to act as hosts of agents in the family Anaplasmataceae and are possibly potential reservoirs of these pathogens. Molecular and phylogenetic studies have been carried out on samples of two gray brocket specimens (Mazama gouazoubira) from the city of Guarapuava, state of Paraná, Brazil, for the detection of Anaplasma sp. in these animals. Partial nucleotide sequences of the genes 16S rRNA and groESL were used for phylogenetic analyses and compared with other 13 and 17 partial sequences of the respective genes obtained in GenBank. These assessments showed topological incongruence among the trees generated in the phylogenetic analyses. Phylogenetic analysis based on the gene 16S rRNA of the genotypes amplified in the samples of this study was similar to those of A. bovis detected in dogs and wild deer in Japan, whereas studies carried out on gene groESL indicated proximity with sequences of Anaplasma sp. that were also isolated in deer in Japan and allocated in the same clade of partial sequences of A. phagocytophilum. As the 16S rRNA gene is highly conserved, with few polymorphic positions, it may show low reliability for studies on phylogenetic positioning. The present study detected an Anaplasma sp. genotype in two specimens of M. gouazoubira in southern Brazil, which may mean that this agent possibly circulates in deer populations, and demonstrated the need for studies related to the possible role of deer in enzootic cycles of Anaplasmataceae in Brazil.
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Affiliation(s)
- Anna Claudia Baumel Mongruel
- 1 Laboratório de Doenças Infecciosas e Parasitárias, Departamento de Medicina Veterinária, Universidade Estadual do Centro-Oeste (UNICENTRO) , Guarapuava, Brazil
| | - Jyan Lucas Benevenute
- 2 Laboratório de Imunoparasitologia, Departamento de Patologia Veterinária, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) , Jaboticabal, Brazil
| | - Marcos Rogério André
- 2 Laboratório de Imunoparasitologia, Departamento de Patologia Veterinária, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) , Jaboticabal, Brazil
| | - Adriano de Oliveira Torres Carrasco
- 1 Laboratório de Doenças Infecciosas e Parasitárias, Departamento de Medicina Veterinária, Universidade Estadual do Centro-Oeste (UNICENTRO) , Guarapuava, Brazil
| | - Rosangela Zacarias Machado
- 2 Laboratório de Imunoparasitologia, Departamento de Patologia Veterinária, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) , Jaboticabal, Brazil
| | - Meire Christina Seki
- 1 Laboratório de Doenças Infecciosas e Parasitárias, Departamento de Medicina Veterinária, Universidade Estadual do Centro-Oeste (UNICENTRO) , Guarapuava, Brazil
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Sormunen JJ, Penttinen R, Klemola T, Vesterinen EJ, Hänninen J. Anaplasma phagocytophilum in questing Ixodes ricinus ticks in southwestern Finland. EXPERIMENTAL & APPLIED ACAROLOGY 2016; 70:491-500. [PMID: 27812829 DOI: 10.1007/s10493-016-0093-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 10/20/2016] [Indexed: 06/06/2023]
Abstract
Anaplasma phagocytophilum is the causative agent of an emerging tick-borne disease, human granulocytic anaplasmosis. While the bacterium has been reported from questing ticks in neighboring Sweden, Norway and Russia, the few surveys regarding questing ticks in Finland have thus far been negative. In the current study, the prevalence of A. phagocytophilum in Ixodes ricinus populations was evaluated in several study localities around southwestern Finland during 2013-2014. Some of these populations were previously screened and found negative for A. phagocytophilum in 2000. A total of 3158 I. ricinus collected by blanket dragging were screened for Anaplasma spp. using qPCR. Anaplasma were detected in 9.2% of adult ticks (n = 87) and 3.1% of nymphs (n = 979). All larval samples were negative for infection. All Anaplasma-positive samples were identified as A. phagocytophilum by sequencing. This is, to the best of our knowledge, the first report of the pathogen from questing ticks in Finland. Furthermore, the pathogen was detected from several localities found negative during the previous screening 13 years earlier.
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Affiliation(s)
- Jani J Sormunen
- Department of Biology, University of Turku, 20014, Turku, Finland.
- Archipelago Research Institute, University of Turku, 20014, Turku, Finland.
| | - Ritva Penttinen
- Department of Biology, University of Turku, 20014, Turku, Finland
| | - Tero Klemola
- Department of Biology, University of Turku, 20014, Turku, Finland
| | - Eero J Vesterinen
- Department of Biology, University of Turku, 20014, Turku, Finland
- Department of Agricultural Sciences, University of Helsinki, 00014, Helsinki, Finland
| | - Jari Hänninen
- Archipelago Research Institute, University of Turku, 20014, Turku, Finland
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16
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Skotarczak B, Wodecka B, Rymaszewska A, Adamska M. Molecular evidence for bacterial pathogens in Ixodes ricinus ticks infesting Shetland ponies. EXPERIMENTAL & APPLIED ACAROLOGY 2016; 69:179-189. [PMID: 26920921 PMCID: PMC4844639 DOI: 10.1007/s10493-016-0027-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Ixodes ricinus has the potential to transmit zoonotic pathogens to humans and domestic animals. The feeding I. ricinus (n = 1737) collected from 49 Shetland ponies and questing ones from vegetation (n = 371) were tested for the presence and differentiation of the bacterial species. DNA of I. ricinus ticks was examined with PCR and sequencing analysis to identify species of Borrelia burgdorferi sensu lato (Bbsl), Anaplasma phagocytophilum and Rickettsia spp. Altogether, 24.3 % I. ricinus of the infested horses and 12.4 % ticks from vegetation carried at least one pathogen species. Horse-feeding ticks (19.2 %) were significantly more frequently infected with Borrelia spp. than questing ticks (4.8 %). Among Bbsl species, in I. ricinus infesting ponies, B. garinii, B. afzelii, B. burgdorferi sensu stricto, B. valaisiana and B. lusitanie and one species, B. miyamotoi related to relapsing fever group, were detected. The 73 flaB gene sequences of Borrelia obtained from feeding I. ricinus have been deposited in GenBank. Among Rickettsia species, two were identified: R. helvetica which was dominant and R. monacensis. Infections with more than one pathogenic species, involving mostly Bbsl and R. helvetica were detected in 6.3 % of infected ticks collected from horses. Shetland ponies may play an important role in the epidemiological cycle of Bbsl and probably could contribute to the natural cycle of A. phagocytophilum and R. helvetica as host for infected ticks. The awareness about these infectious agents in ticks from ponies might be an important criterion for the risk assessment of human diseases, especially as these animals are maintained for recreational purposes.
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Affiliation(s)
- Bogumiła Skotarczak
- Department of Genetics, University of Szczecin, Felczaka 3c, 71-412, Szczecin, Poland.
| | - Beata Wodecka
- Department of Genetics, University of Szczecin, Felczaka 3c, 71-412, Szczecin, Poland
| | - Anna Rymaszewska
- Department of Genetics, University of Szczecin, Felczaka 3c, 71-412, Szczecin, Poland
| | - Małgorzata Adamska
- Department of Genetics, University of Szczecin, Felczaka 3c, 71-412, Szczecin, Poland
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17
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Alpha proteobacteria of genusAnaplasma(Rickettsiales: Anaplasmataceae): Epidemiology and characteristics ofAnaplasmaspecies related to veterinary and public health importance. Parasitology 2016; 143:659-85. [DOI: 10.1017/s0031182016000238] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
SUMMARYTheAnaplasmaspecies are important globally distributed tick-transmitted bacteria of veterinary and public health importance. These pathogens, cause anaplasmosis in domestic and wild animal species including humans.Rhipicephalus, Ixodes, DermacentorandAmblyommagenera of ticks are the important vectors ofAnaplasma.Acute anaplasmosis is usually diagnosed upon blood smear examination followed by antibodies and nucleic acid detection. All age groups are susceptible but prevalence increases with age. Serological cross-reactivity is one of the important issues amongAnaplasmaspecies. They co-exist and concurrent infections occur in animals and ticks in same geographic area. These are closely related bacteria and share various common attributes which should be considered while developing vaccines and diagnostic assays. Movement of susceptible animals from non-endemic to endemic regions is the major risk factor of bovine/ovine anaplasmosis and tick-borne fever. Tetracyclines are currently available drugs for clearance of infection and treatment in humans and animals. Worldwide vaccine is not yet available. Identification, elimination of reservoirs, vector control (chemical and biological), endemic stability, habitat modification, rearing of tick resistant breeds, chemotherapy and tick vaccination are major control measures of animal anaplasmosis. Identification of reservoirs and minimizing the high-risk tick exposure activities are important control strategies for human granulocytic anaplasmosis.
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18
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Atif FA. Anaplasma marginale and Anaplasma phagocytophilum: Rickettsiales pathogens of veterinary and public health significance. Parasitol Res 2015; 114:3941-57. [PMID: 26346451 DOI: 10.1007/s00436-015-4698-2] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/24/2015] [Indexed: 11/28/2022]
Abstract
Anaplasma marginale and Anaplasma phagocytophilum are the most important tick-borne bacteria of veterinary and public health significance in the family Anaplasmataceae. The objective of current review is to provide knowledge on ecology and epidemiology of A. phagocytophilum and compare major similarities and differences of A. marginale and A. phagocytophilum. Bovine anaplasmosis is globally distributed tick-borne disease of livestock with great economic importance in cattle industry. A. phagocytophilum, a cosmopolitan zoonotic tick transmitted pathogen of wide mammalian hosts. The infection in domestic animals is generally referred as tick-borne fever. Concurrent infections exist in ticks, domestic and wild animals in same geographic area. All age groups are susceptible, but the prevalence increases with age. Movement of susceptible domestic animals from tick free non-endemic regions to disease endemic regions is the major risk factor of bovine anaplasmosis and tick-borne fever. Recreational activities or any other high-risk tick exposure habits as well as blood transfusion are important risk factors of human granulocytic anaplasmosis. After infection, individuals remain life-long carriers. Clinical anaplasmosis is usually diagnosed upon examination of stained blood smears. Generally, detection of serum antibodies followed by molecular diagnosis is usually recommended. There are problems of sensitivity and cross-reactivity with both the Anaplasma species during serological tests. Tetracyclines are the drugs of choice for treatment and elimination of anaplasmosis in animals and humans. Universal vaccine is not available for either A. marginale or A. phagocytophilum, effective against geographically diverse strains. Major control measures for bovine anaplasmosis and tick-borne fever include rearing of tick-resistant breeds, endemic stability, breeding Anaplasma-free herds, identification of regional vectors, domestic/wild reservoirs and control, habitat modification, biological control, chemotherapy, and vaccinations (anaplasmosis and/or tick vaccination). Minimizing the tick exposure activities, identification and control of reservoirs are important control measures for human granulocytic anaplasmosis.
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Affiliation(s)
- Farhan Ahmad Atif
- Department of Animal Sciences, University College of Agriculture, University of Sargodha, Sargodha, 40100, Pakistan.
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Paulauskas A, Radzijevskaja J, Mardosaitė-Busaitienė D, Aleksandravičienė A, Galdikas M, Krikštolaitis R. New localities of Dermacentor reticulatus ticks in the Baltic countries. Ticks Tick Borne Dis 2015; 6:630-5. [PMID: 26045169 DOI: 10.1016/j.ttbdis.2015.05.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 05/08/2015] [Accepted: 05/14/2015] [Indexed: 11/18/2022]
Abstract
According to previous observations in three Baltic States, Dermacentor reticulatus was found only in Lithuania where it occurred mainly in the central and western parts of the country. During the past decade, evidence about a changing distribution of D. reticulatus in the Baltic countries was provided by the occurrence of canine babesiosis in the new locations in Lithuania and Latvia. In the present study the current distribution of D. reticulatus in Lithuania and Latvia was investigated. Ticks were collected in different habitats in 2013-2014. A total of 3693 questing ticks belonging to D. reticulatus (n = 2789), Ixodes ricinus (n = 896) and I. persulcatus (n=8) were collected in Lithuania and Latvia. Questing D. reticulatus ticks were found in 73.4% (58/79) and in 44.4% (12/28) of the sampling localities in Lithuania and Latvia, respectively. Relative abundances of the ticks in different habitats were compared. All sites with high abundance of D. reticulatus ticks were localized in open areas close to a water basin and mixed forest. The present study demonstrates that during the past two decades D. reticulatus has expanded its range in the Baltic countries. D. reticulatus has been detected in 38 new localities in which this species had not been previously reported. The northern border of D. reticulatus in central Europe moved further to the north. New localities (n = 12) with D. reticulatus occurrence have been found in southern Latvia.
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Affiliation(s)
| | | | | | | | - Matas Galdikas
- Vytautas Magnus University, Vileikos 8, Kaunas LT-44404, Lithuania
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20
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Stańczak J, Cieniuch S, Lass A, Biernat B, Racewicz M. Detection and quantification of Anaplasma phagocytophilum and Babesia spp. in Ixodes ricinus ticks from urban and rural environment, northern Poland, by real-time polymerase chain reaction. EXPERIMENTAL & APPLIED ACAROLOGY 2015; 66:63-81. [PMID: 25721255 PMCID: PMC4412423 DOI: 10.1007/s10493-015-9887-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 02/17/2015] [Indexed: 05/10/2023]
Abstract
Anaplasma phagocytophilum and Babesia spp. are emerging tick-borne pathogens which can threaten human health. A duplex real-time PCR and qPCRs with primers and probes targeting 97 and 116 bp fragments of 16S rRNA and 18S rRNA genes, respectively, were used for qualitative and quantitative detection of both pathogens in Ixodes ricinus ticks. Altogether 1875 ticks (1084 adults and 791 nymphs) were collected from rural and urban habitats in northern Poland. Of them, at least 0.9% were found to be infected with A. phagocytophilum while 2.5% with Babesia spp. A comparison of the infection rates by the tick stage, the type of area, the collection site, habitats of different tick density and by the month of collection was done. The prevalence of pathogens was significantly lower in nymphs than in adult ticks (p = 0.02) and in rural areas than in urban areas (p = 0.007). Four different 16S rRNA gene variants of A. phagocytophilum were determine, however none of them showed 100% identity with compared sequences isolated from human patients. The dominant Babesia species was B. venatorum. Results of qPCRs with circular and linearized forms of plasmids used as the standards showed significant difference in the pathogen loads (p = 0.001). The copy numbers of A. phagocytophilum and Babesia spp. estimated from the linear plasmids were 28.7 and 5.1 times lower, respectively, when compared with their circular forms, and were accepted as more reliable. The average number of copies of 16S rRNA gene of A. phagocytophilum in the positive I. ricinus samples were 3.39 × 10(5) ± 6.09 × 10(5). The mean copy number of 18S rRNA gene of Babesia spp. was ~2.55 × 10(5) ± 1.04 × 10(6). We confirmed the presence of A. phagocytophilum and Babesia spp. in I. ricinus in both rural and urban environments. The determined low infection rates suggests, however, that the risk for local population and tourists to acquire infection is also low. Moreover, we confirmed recent findings that serious overestimation by circular plasmid DNA makes it less suitable as a standard and that the linear standards should be recommended for qPCR.
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Affiliation(s)
- Joanna Stańczak
- Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, 9B Powstania Styczniowego Street, 81-519, Gdynia, Poland,
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21
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Jongejan F, Ringenier M, Putting M, Berger L, Burgers S, Kortekaas R, Lenssen J, van Roessel M, Wijnveld M, Madder M. Novel foci of Dermacentor reticulatus ticks infected with Babesia canis and Babesia caballi in the Netherlands and in Belgium. Parasit Vectors 2015; 8:232. [PMID: 25889392 PMCID: PMC4404102 DOI: 10.1186/s13071-015-0841-2] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 04/03/2015] [Indexed: 11/23/2022] Open
Abstract
Background Autochthonous populations of Dermacentor reticulatus ticks in the Netherlands were discovered after fatal cases of babesiosis occurred in resident dogs in 2004. The presence of D. reticulatus in the Netherlands has also linked with the emergence of piroplasmosis in the resident horse population. The aim of this study was to put together results of continued surveillance of field sites and hosts for this tick in the Netherlands and also in Belgium and determine their infection status for Babesia and Theileria species. Methods Ticks were collected from the vegetation at 11 locations between 2011 and 2013. D. reticulatus ticks were also collected from different hosts between 2007 and 2013. Ticks were screened by PCR and reverse line blot (RLB). Results A total of 1368 D. reticulatus ticks were collected from 4 previously known field locations and from 5 new locations in the Netherlands and from 2 sites in Belgium (one old and one new location). A total of 855 ticks collected from 8 locations in the Netherlands and 2 locations in Belgium were tested. Fourteen ticks (1,64%) collected at 4 field locations (Dintelse Gorzen, Rozenburg, Slikken van de Heen and St. Philipsland) were positive for Babesia canis, whereas two ticks were positive for Babesia caballi, one tick in the Dintelse Gorzen in the Netherlands and one tick was found positive in De Panne in Belgium. A further 1092 D. reticulatus ticks were collected between 2007 and 2013 from 40 dogs (132 ticks), two ticks from two humans, 51 ticks from 15 horses, two ticks from two cats, one tick from a roe deer, whereas most ticks (904) were collected from cattle (n = 25). Ticks were found throughout the year on dogs in nearly all provinces of the Netherlands. None of the ticks collected from these hosts were infected. Conclusions D. reticulatus is continuing its spread into novel areas. The finding that some autochthonous ticks are infected with B. canis and B. caballi poses a threat to the resident dog and horse population and justifies year-round tick control measures.
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Affiliation(s)
- Frans Jongejan
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands. .,Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Pretoria, Onderstepoort, 0110, South Africa.
| | - Moniek Ringenier
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Michael Putting
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Laura Berger
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Stefan Burgers
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Reinier Kortekaas
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Jesse Lenssen
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Marleen van Roessel
- Utrecht Centre for Tick-borne Diseases (UCTD), FAO Reference Centre for Ticks and Tick-borne Diseases, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| | - Michiel Wijnveld
- Current address: Institute for Hygiene and Applied Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Kinderspitalgasse 15, 1090, Vienna, Austria.
| | - Maxime Madder
- Unit of Veterinary Entomology, Department of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, B2000, Antwerp, Belgium. .,Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Pretoria, Onderstepoort, 0110, South Africa.
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22
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Rar VA, Epikhina TI, Yakimenko VV, Malkova MG, Tancev AK, Bondarenko EI, Ivanov MK, Tikunova NV. Genetic variability of Anaplasma phagocytophilum in ticks and voles from Ixodes persulcatus/Ixodes trianguliceps sympatric areas from Western Siberia, Russia. Ticks Tick Borne Dis 2014; 5:854-63. [DOI: 10.1016/j.ttbdis.2014.07.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 06/27/2014] [Accepted: 07/03/2014] [Indexed: 10/24/2022]
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23
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Blaňarová L, Stanko M, Carpi G, Miklisová D, Víchová B, Mošanský L, Bona M, Derdáková M. Distinct Anaplasma phagocytophilum genotypes associated with Ixodes trianguliceps ticks and rodents in Central Europe. Ticks Tick Borne Dis 2014; 5:928-38. [PMID: 25129860 DOI: 10.1016/j.ttbdis.2014.07.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 07/01/2014] [Accepted: 07/15/2014] [Indexed: 01/27/2023]
Abstract
Rodents are important reservoir hosts of tick-borne pathogens. Anaplasma phagocytophilum is the causative agent of granulocytic anaplasmosis of both medical and veterinary importance. In Europe, this pathogen is primarily transmitted by the Ixodes ricinus tick among a wide range of vertebrate hosts. However, to what degree A. phagocytophilum exhibits host specificity and vector association is poorly understood. To assess the extent of vector association of this pathogen and to clarify its ecology in Central Europe we have analyzed and compared the genetic variability of A. phagocytophilum strains from questing and feeding I. ricinus and Ixodes trianguliceps ticks, as well as from rodent' tissue samples. Tick collection and rodent trapping were performed during a 2-year study (2011-2012) in ecologically contrasting setting at four sites in Eastern Slovakia. Genetic variability of this pathogen was studied from the collected samples by DNA amplification and sequencing of four loci followed by Bayesian phylogenetic analyses. A. phagocytophilum was detected in questing I. ricinus ticks (0.7%) from all studied sites and in host feeding I. trianguliceps ticks (15.2%), as well as in rodent biopsies (ear - 1.6%, spleen - 2.2%), whereas A. phagocytophilum was not detected in rodents from those sites where I. trianguliceps ticks were absent. Moreover, Bayesian phylogenetic analyses have shown the presence of two distinct clades, and tree topologies were concordant for all four investigated loci. Importantly, the first clade contained A. phagocytophilum genotypes from questing I. ricinus and feeding I. ricinus from a broad array of hosts (i.e.,: humans, ungulates, birds and dogs). The second clade comprised solely genotypes found in rodents and feeding I. trianguliceps. In this study we have confirmed that A. phagocytophilum strains display specific host and vector associations also in Central Europe similarly to A. phagocytophilum' molecular ecology in United Kingdom. This study suggests that A. phagocytophilum genotypes associated with rodents are probably transmitted solely by I. trianguliceps ticks, thus implying that rodent-associated A. phagocytophilum strains may not pose a risk for humans.
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Affiliation(s)
- Lucia Blaňarová
- Institute of Parasitology SAS, Hlinkova 3, 040 01 Košice, Slovakia.
| | - Michal Stanko
- Institute of Parasitology SAS, Hlinkova 3, 040 01 Košice, Slovakia; Institute of Zoology SAS, Dúbravská cesta 9, 845 06 Bratislava, Slovakia.
| | - Giovanna Carpi
- Fondazione Edmund Mach, Trento, Italy; Yale School of Public Health, Department of Epidemiology of Microbial Diseases, 60 College Street, New Haven, USA.
| | - Dana Miklisová
- Institute of Parasitology SAS, Hlinkova 3, 040 01 Košice, Slovakia.
| | | | | | - Martin Bona
- Department of Anatomy, Faculty of Medicine UPJS, Šrobárová 2, 041 80 Košice, Slovakia.
| | - Markéta Derdáková
- Institute of Parasitology SAS, Hlinkova 3, 040 01 Košice, Slovakia; Institute of Zoology SAS, Dúbravská cesta 9, 845 06 Bratislava, Slovakia.
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24
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Krämer F, Schaper R, Schunack B, Połozowski A, Piekarska J, Szwedko A, Jodies R, Kowalska D, Schüpbach D, Pantchev N. Serological detection of Anaplasma phagocytophilum, Borrelia burgdorferi sensu lato and Ehrlichia canis antibodies and Dirofilaria immitis antigen in a countrywide survey in dogs in Poland. Parasitol Res 2014; 113:3229-39. [PMID: 24974092 PMCID: PMC4143602 DOI: 10.1007/s00436-014-3985-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 06/06/2014] [Indexed: 11/25/2022]
Abstract
Canine vector-borne diseases (CVBDs) have increasingly become a focus of attention in the past few years. Nevertheless, in many parts of Europe information on their occurrence is still scarce. In a large study in Poland 3,094 serum samples taken from dogs throughout all 16 Polish provinces were tested using a commercial kit for the detection of circulating antibodies against Anaplasma phagocytophilum, Borrelia burgdorferi sensu lato and Ehrlichia canis and of Dirofilaria immitis antigen. A total of 12.31% (381/3,094; 95% confidence interval [CI]: 11.18-13.52%) and 3.75% (116/3,094; 95% CI: 3.11-4.48%) of the dogs were positive for A. phagocytophilum and B. burgdorferi s.l. antibodies, respectively. Furthermore, 0.26% (8/3,094; 95% CI: 0.11-0.51%) were positive for E. canis antibodies and 0.16% (5/3,094; 95% CI: 0.05-0.38%) for D. immitis antigen. The highest percentages of A. phagocytophilum-positive dogs were noted in Lesser Poland, Silesia and Łódź Provinces. For B. burgdorferi s.l., the highest prevalence was recorded in Łódź Province. Co-infections with A. phagocytophilum and B. burgdorferi s.l. were recorded in 1.71% of all examined dogs (53/3,094; 95% CI: 1.29-2.23%). One dog even had a triple infection, testing positive for E. canis too. Both A. phagocytophilum and B. burgdorferi s.l. have previously been reported in Poland and were confirmed in the present study by positive samples from all 16 provinces. Concerning E. canis and D. immitis travel history or importation cannot be excluded as factors which may have determined the occurrence of these pathogens in the relevant animals. Practitioners in Poland should be aware of the above mentioned CVBDs and of prophylactic measures to protect dogs and their owners.
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Affiliation(s)
- Friederike Krämer
- Institute for Parasitology and Tropical Veterinary Medicine, Faculty of Veterinary Medicine, Freie Universität Berlin, 14163, Berlin, Germany
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25
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Härtwig V, von Loewenich FD, Schulze C, Straubinger RK, Daugschies A, Dyachenko V. Detection of Anaplasma phagocytophilum in red foxes (Vulpes vulpes) and raccoon dogs (Nyctereutes procyonoides) from Brandenburg, Germany. Ticks Tick Borne Dis 2014; 5:277-80. [PMID: 24512760 DOI: 10.1016/j.ttbdis.2013.11.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 11/15/2013] [Accepted: 11/18/2013] [Indexed: 11/25/2022]
Abstract
Anaplasma phagocytophilum is an obligate intracellular and tick-transmitted bacterium, which causes granulocytic anaplasmosis in animals and humans. Although infection with A. phagocytophilum in domestic animals and vector ticks is documented, there is sparse information on the occurrence of A. phagocytophilum in wild animals. Red foxes (Vulpes vulpes) as well as raccoon dogs (Nyctereutes procyonoides) are wildlife species highly abundant in certain areas of Germany and represent a potential wildlife reservoir for zoonotic diseases. To obtain data about the occurrence of A. phagocytophilum in these animals, red fox and raccoon dog carcasses (hunted or found dead) were collected from January to September 2009 in the Federal State of Brandenburg, Germany. Lung tissue samples were subjected to DNA extraction and were examined for the presence of A. phagocytophilum DNA by means of real-time PCR. Anaplasma phagocytophilum was detected in 10 out of 122 (8.2%) lungs of red foxes and in 3 out of 13 (23%) lungs of raccoon dogs. To the best of our knowledge, A. phagocytophilum was detected for the first time in red foxes and raccoon dogs in Germany.
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Affiliation(s)
- Vera Härtwig
- Institute of Parasitology, Veterinary Faculty, University of Leipzig, Germany
| | | | | | - Reinhard K Straubinger
- Institute for Infectious Disease and Zoonoses, Department for Veterinary Science, Faculty for Veterinary Medicine, LMU Munich, Germany
| | - Arwid Daugschies
- Institute of Parasitology, Veterinary Faculty, University of Leipzig, Germany
| | - Viktor Dyachenko
- Institute for Infectious Disease and Zoonoses, Department for Veterinary Science, Faculty for Veterinary Medicine, LMU Munich, Germany.
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26
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Prevalence of tick-borne pathogens in ticks collected from migratory birds in Latvia. Ticks Tick Borne Dis 2013; 5:75-81. [PMID: 24246709 DOI: 10.1016/j.ttbdis.2013.08.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 08/28/2013] [Accepted: 08/28/2013] [Indexed: 11/22/2022]
Abstract
Migratory birds act as hosts and long-distance vectors for several tick-borne infectious agents. Here, feeding Ixodes ticks were collected from migratory birds during the autumn migration period in Latvia and screened for the presence of epidemiologically important non-viral pathogens. A total of 93 DNA samples of ticks (37 larvae and 56 nymphs) removed from 41 birds (order Passeriformes, 9 species) was tested for Lyme borreliosis spirochaetes, Anaplasma phagocytophilum, Rickettsia spp., and Babesia spp. Borrelia burgdorferi DNA was detected in 18% of the tick samples, and a majority of infected ticks were from thrush (Turdus spp.) birds. Among the infected ticks, Borrelia valaisiana was detected in 41% of cases, Borrelia garinii in 35%, and mixed Bo. valaisiana and Bo. garinii infection in 24%. Anaplasma phagocytophilum DNA was detected in 2% of ticks, R. helvetica in 12%, and Babesia spp. pathogens in 4% of ticks. Among these samples, 3 Babesia species were identified: Ba. divergens, Ba. microti, and Ba. venatorum. Coinfection with different pathogens that included mixed infections with different Borrelia genospecies was found in 20% of nymphal and 3% of larval Ixodes ticks. These results suggest that migratory birds may support the circulation and spread of medically significant zoonoses in Europe.
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Stuen S, Granquist EG, Silaghi C. Anaplasma phagocytophilum--a widespread multi-host pathogen with highly adaptive strategies. Front Cell Infect Microbiol 2013; 3:31. [PMID: 23885337 PMCID: PMC3717505 DOI: 10.3389/fcimb.2013.00031] [Citation(s) in RCA: 381] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Accepted: 06/30/2013] [Indexed: 11/21/2022] Open
Abstract
The bacterium Anaplasma phagocytophilum has for decades been known to cause the disease tick-borne fever (TBF) in domestic ruminants in Ixodes ricinus-infested areas in northern Europe. In recent years, the bacterium has been found associated with Ixodes-tick species more or less worldwide on the northern hemisphere. A. phagocytophilum has a broad host range and may cause severe disease in several mammalian species, including humans. However, the clinical symptoms vary from subclinical to fatal conditions, and considerable underreporting of clinical incidents is suspected in both human and veterinary medicine. Several variants of A. phagocytophilum have been genetically characterized. Identification and stratification into phylogenetic subfamilies has been based on cell culturing, experimental infections, PCR, and sequencing techniques. However, few genome sequences have been completed so far, thus observations on biological, ecological, and pathological differences between genotypes of the bacterium, have yet to be elucidated by molecular and experimental infection studies. The natural transmission cycles of various A. phagocytophilum variants, the involvement of their respective hosts and vectors involved, in particular the zoonotic potential, have to be unraveled. A. phagocytophilum is able to persist between seasons of tick activity in several mammalian species and movement of hosts and infected ticks on migrating animals or birds may spread the bacterium. In the present review, we focus on the ecology and epidemiology of A. phagocytophilum, especially the role of wildlife in contribution to the spread and sustainability of the infection in domestic livestock and humans.
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Affiliation(s)
- Snorre Stuen
- Department of Production Animal Clinical Sciences, Norwegian School of Veterinary Science Sandnes, Norway.
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