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Polat C, Erdin M, Kalkan ŞO, Irmak S, Çetintaş O, Çolak F, Kalkan KK, Çoğal M, Ölgen K, Sözen M, Matur F, Öktem İMA. Evaluating climate-dependent distribution of orthohantaviruses with monitoring wild rodents: One Health Perspective †. Braz J Microbiol 2024:10.1007/s42770-024-01447-2. [PMID: 39012426 DOI: 10.1007/s42770-024-01447-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 06/29/2024] [Indexed: 07/17/2024] Open
Abstract
Orthohantaviruses, cause hemorrhagic fever with renal syndrome, nephropathia epidemica, and hantavirus pulmonary syndrome, are major public health problems all over the world. Wild rodent surveillance for orthohantaviruses is of great importance for the preparedness against these human infections and the prediction of possible outbreak regions. Thus, we aimed to screen orthohantaviruses in wild rodents in Southern Anatolia, where the area has some of the glacial period refugia in the Mediterranean Basin, and interpret their current epidemiology with climatic biovariables in comparison with previously positive regions.We trapped muroid rodents between 2015 and 2017, and screened for orthohantaviruses. Then, we evaluated the relationship between orthohantavirus infections and bioclimatic variables. In spite of the long-term and seasonal sampling, we found no evidence for Orthohantavirus infections. The probable absence of orthohantaviruses in the sampling area was further evaluated from the climatic perspective, and results led us suggest that Orthohantavirus epidemiology might be relatively dependent on precipitation levels in driest and warmest quarters, and temperature fluctuations.These initial data might provide necessary perspective on wild rodent surveillance for orthohantaviruses in other regions, and help to collect lacking data for a such habitat suitability study in a bigger scale in the future.
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Affiliation(s)
- Ceylan Polat
- Department of Medical Microbiology, Institute of Health Sciences, Dokuz Eylul University, Izmir, Türkiye.
- Department of Medical Microbiology, Faculty of Medicine, Hacettepe University, Ankara, Türkiye.
| | - Mert Erdin
- Department of Virology, Medicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Şaban Orçun Kalkan
- Department of Medical Microbiology, Faculty of Medicine, Acıbadem Mehmet Ali Aydınlar University, Istanbul, Türkiye
| | - Sercan Irmak
- Science and Technology Application and Research Center, Balıkesir University, Balıkesir, Türkiye
| | - Ortaç Çetintaş
- Department of Biology, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, Zonguldak, Türkiye
| | - Faruk Çolak
- Department of Biology, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, Zonguldak, Türkiye
| | - Kürşat Kenan Kalkan
- Department of Biology, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, Zonguldak, Türkiye
| | - Muhsin Çoğal
- Department of Biology, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, Zonguldak, Türkiye
| | - Kirami Ölgen
- Department of Geography, Faculty of Letters, Ege University, Izmir, Türkiye
| | - Mustafa Sözen
- Department of Biology, Faculty of Arts and Sciences, Zonguldak Bulent Ecevit University, Zonguldak, Türkiye
| | - Ferhat Matur
- Department of Biology, Faculty of Science, Dokuz Eylul University, Izmir, Türkiye
| | - İbrahim Mehmet Ali Öktem
- Department of Medical Microbiology, Institute of Health Sciences, Dokuz Eylul University, Izmir, Türkiye.
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Erdin M, Polat C, Smura T, Irmak S, Cetintas O, Cogal M, Colak F, Karatas A, Sozen M, Matur F, Vapalahti O, Sironen T, Oktem IMA. Phylogenetic Characterization of Orthohantavirus dobravaense (Dobrava Virus). Emerg Infect Dis 2024; 30:779-782. [PMID: 38526228 PMCID: PMC10977844 DOI: 10.3201/eid3004.230912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
We report complete coding sequences of Orthohantavirus dobravaense (Dobrava virus) Igneada strains and phylogenetic characterization of all available complete coding sequences. Our analyses suggested separation of host-dependent lineages, followed by geographic clustering. Surveillance of orthohantaviruses using complete genomes would be useful for assessing public health threats from Dobrava virus.
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Vaidya SR. Immuno-Colorimetric Neutralization Test: A Surrogate for Widely Used Plaque Reduction Neutralization Tests in Public Health Virology. Viruses 2023; 15:v15040939. [PMID: 37112919 PMCID: PMC10143445 DOI: 10.3390/v15040939] [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: 02/22/2023] [Revised: 03/23/2023] [Accepted: 03/30/2023] [Indexed: 04/29/2023] Open
Abstract
Since their first documentation in 1952, plaque reduction neutralization tests (PRNTs) have become the choice of test for the measurement of neutralizing antibodies against a particular virus. However, PRNTs can be performed only against viruses that cause cytopathic effects (CPE). PRNTs also require skilled personnel and can be time-consuming depending on the time required for the virus to cause CPE. Hence, their application limits large-scale studies or epidemiological and laboratory investigations. Since 1978, many surrogate PRNTs or immunocolorimetric assay (ICA)-based focus reduction neutralization tests (FRNT) have been developed. In this article, ICAs and their utility in FRNTs for the characterization of neutralizing antibodies, homologous or heterologous cross-neutralization, and laboratory diagnosis of viruses of public health importance have been discussed. Additionally, possible advancements and automations have been described that may help in the development and validation of novel surrogate tests for emerging viruses.
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Affiliation(s)
- Sunil R Vaidya
- Virus Registry and Virus Repository, ICMR-National Institute of Virology, 20-A Dr. Ambedkar Road, Pune 411001, India
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Epidemiology of hemorrhagic fever with renal syndrome in Tai'an area. Sci Rep 2021; 11:11596. [PMID: 34226582 PMCID: PMC8257732 DOI: 10.1038/s41598-021-91029-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 05/07/2021] [Indexed: 11/08/2022] Open
Abstract
Hemorrhagic fever with renal syndrome (HFRS), a serious threat to human health, is mainly transmitted by rodents in Eurasia. The risk of disease differs according to sex, age, and occupation. Further, temperature and rainfall have some lagging effects on the occurrence of the disease. The quantitative data for these factors in the Tai'an region of China are still unknown. We used a forest map to calculate the risk of HFRS in different populations and used four different mathematical models to explain the relationship between time factors, meteorological factors, and the disease. The results showed that compared with the whole population, the relative risk in rural medical staff and farmers was 5.05 and 2.00, respectively (p < 0.05). Joinpoint models showed that the number of cases decreased by 33.32% per year from 2005 to 2008 (p < 0.05). The generalized additive model showed that air temperature was positively correlated with disease risk from January to June, and that relative humidity was negatively correlated with risk from July to December. From January to June, with an increase in temperature, after 15 lags, the cumulative risk of disease increased at low temperatures. From July to December, the cumulative risk decreased with an increase in the relative humidity. Rural medical staff, farmers, men, and middle-aged individuals were at a high risk of HFRS. Moreover, air temperature and relative humidity are important factors that affect disease occurrence. These associations show lagged and differing effects according to the season.
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İnce N, Öne K, Sav T, Sungur MA, Menemenlioğlu D. An evaluation of suspected cases of Hantavirus infection admitted to a tertiary care university hospital in Düzce, Turkey, between 2012 and 2018. Turk J Med Sci 2021; 51:288-296. [PMID: 33021756 PMCID: PMC7991866 DOI: 10.3906/sag-1912-123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 10/06/2020] [Indexed: 11/06/2022] Open
Abstract
Background/aim Hantavirus is a rodent borne zoonosis caused by the members of the virus family Bunyaviridae, genus
Hantavirus
. In this study, we aimed to determine the role of peripheral blood leukocyte ratio in differential diagnosis of Hantavirus disease. Materials and methods The medical records of patients at the Düzce University Medical Faculty were examined retrospectively. A total of 20 patients diagnosed with hantavirus infection confirmed by serologic tests were included in the study (Group 1). The other group consisted of 30 patients suspected of hantavirus infection but found negative (Group 2). Demographic, clinical and laboratory characteristics, neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), and lymphocyte/monocyte (LMR) ratios of both groups were compared. Results As a result of the istatistics analysis, no difference was found between the groups’ age, sex, and clinical complaints except lethargy-weakness (P = 0.004) and diarrhea (P < 0.001). Hemogram analysis showed a significant difference between the groups in terms of leukocyte, hemoglobin, hematocrit, platelet, mean platelet volume (P < 0.05) and PLR (P = 0.001) and LMR (P = 0.003) values from peripheral blood leukocyte ratios. Conclusion In conclusion, NLR, PLR, and LMR ratios may be useful for clinicians in differential diagnosis of Hantavirus in patients presenting with similar symptoms of Hantavirus disease.
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Affiliation(s)
- Nevin İnce
- Department of Infectious Diseases and Clinical Microbiology, Düzce University Faculty of Medicine, Düzce, Turkey
| | - Kürşad Öne
- Department of Nephrology, Internal Diseases, Düzce University Faculty of Medicine, Düzce, Turkey
| | - Tansu Sav
- Department of Nephrology, Internal Diseases, Düzce University Faculty of Medicine, Düzce, Turkey
| | - Mehmet Ali Sungur
- Department of Biostatistics, Düzce University Faculty of Medicine, Düzce, Turkey
| | - Dilek Menemenlioğlu
- Department of Microbiology Reference Laboratories, National Arboviruses and Viral Zoonoses Unit Public Health Institution of Turkey, Ankara, Turkey
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Epidemiologic Characteristics of Domestic Patients with Hemorrhagic Fever with Renal Syndrome in Taiwan: A 19-Year Retrospective Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17155291. [PMID: 32708017 PMCID: PMC7432905 DOI: 10.3390/ijerph17155291] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022]
Abstract
Background: Hemorrhagic fever with renal syndrome (HFRS) is an illness caused by hantaviruses. Numerous factors modify the risk of hantavirus transmission. This study explored the epidemiological characteristics, differences, and trends in terms of gender, age, season, and living areas of those diagnosed with domestically acquired HFRS in Taiwan from 2001 to 2019. Methods: We examined publicly available annual summary data on the domestic cases with HFRS from 2001 to 2019; these data were obtained from the web database of Taiwan’s Centers for Disease Control (CDC). Results: This study analyzed 21 domestic cases with HFRS from Taiwan’s CDC databases. In this study of the cases of HFRS in Taiwan, a gradual increase in the cases of those aged ≥40 years acquiring the disease was noted, and a distinct pattern of seasonal variation (spring) was observed. Furthermore, more men had domestically acquired HFRS, and living in Taipei metropolitan area (6 cases [28.6%]) and the rural areas (Gao-Ping region, 9 cases [42.9%]) was identified as a potential risk factor. This study represents the first report of confirmed cases of domestically acquired HFRS from surveillance data from Taiwan’s CDC, 2001–2019. Conclusion: This study highlights the importance of longitudinal studies covering a wide geographical area, particularly for highly fluctuating pathogens, to understanding the implications of the transmission of zoonotic diseases in human populations. Important data were identified to inform future surveillance and research efforts in Taiwan.
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