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Sánchez-Rodríguez O, Palomares-Resendiz EG, Díaz-Aparicio E, Arellano-Reynoso B, Martínez-Chavarría LC, Martínez-Serrano G, Hernández-Castro R. Molecular Detection of Coxiella burnetii in Vaginal Swab Samples from Sheep That Aborted. Vector Borne Zoonotic Dis 2024. [PMID: 38989592 DOI: 10.1089/vbz.2023.0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024] Open
Abstract
Background: Coxiella burnetii, an obligate intracellular bacterium, is the etiological agent of Q fever in humans and one of the causes of abortion in small ruminants. Although coxiellosis is considered an exotic disease, there are a few reports in Mexico. Methods: The objective of this work was to determine the presence of C. burnetii DNA in vaginal samples from sheep that presented abortion and ram semen. A total of 180 vaginal exudate samples and 20 semen samples were obtained from five Central and Southern States of Mexico. Total DNA was extracted from vaginal swabs and C. burnetii was identified by PCR amplification and sequencing of the IS1111 insertion sequence. Results and Conclusion: In total, 110 (110/180) vaginal samples and 12 (12/20) semen samples were positive for C. burnetii. This is the first report of C. burnetii in sheep that aborted and in ram semen in Mexico.
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Affiliation(s)
- Oliver Sánchez-Rodríguez
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - Erika G Palomares-Resendiz
- CENID Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Carretera Federal México-Toluca, Cuajimalpa, México
| | - Efrén Díaz-Aparicio
- CENID Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Carretera Federal México-Toluca, Cuajimalpa, México
| | - Beatriz Arellano-Reynoso
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - Luary C Martínez-Chavarría
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - Guadalupe Martínez-Serrano
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - Rigoberto Hernández-Castro
- Departamento de Ecología de Agentes Patógenos, Hospital General Dr. Manuel Gea González, Tlalpan, México
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2
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de Souza EAR, Farias IF, Pesqueira TR, de Azevedo Serpa MC, Cunha TS, Moraes EA, Brandão PE, Labruna MB, Horta MC. Exposure of small ruminants and humans to Coxiella burnetii in the semi-arid region of Northeastern Brazil. Braz J Microbiol 2024; 55:1931-1939. [PMID: 38573541 PMCID: PMC11153395 DOI: 10.1007/s42770-024-01317-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
Q fever is a zoonotic disease caused by the obligate intracellular pathogen Coxiella burnetii, for which domestic ruminants are the primary source of infection in humans. Herein, we investigated the presence of C. burnetii in humans, sheep, and goats in the semi-arid region of northeastern Brazil. The presence of anti-C. burnetii antibodies was surveyed using indirect immunofluorescence assay, and detection of C. burnetii DNA was performed by polymerase chain reaction (PCR). Anti-C. burnetii antibodies were detected in 60% of farms, 4.8% of goats, 1.5% of sheep, and 4.5% of human samples. PCR was positive in 18.9% of blood samples, 7.7% of milk samples, and 7.7% of vaginal mucus samples. A DNA sequence of a C. burnetii DNA sample extracted from the goat vaginal mucus showed 99.2-99.4% nucleotide identity with other strains previously reported in Brazil. These results indicate that C. burnetii is present in the surveyed area, where it poses a risk to both public and animal health. These findings indicate an urgent need for educative actions to protect population, as well as better training of veterinarians to detect and report Q fever.
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Affiliation(s)
- Eline Almeida Rodrigues de Souza
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil.
- Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil.
| | - Ila Ferreira Farias
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil
| | - Tainã Ramos Pesqueira
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil
| | | | - Thaís Souza Cunha
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil
| | - Elenice Andrade Moraes
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil
| | - Paulo Eduardo Brandão
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marcelo Bahia Labruna
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Mauricio Claudio Horta
- Universidade Federal do Vale do São Francisco, Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, Pernambuco, 56300-000, Brazil
- Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
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3
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Liu P, Wu J, Ma W, Yang Y, Lv L, Cai J, Liu Z, He J, Shang Y, Li Z, Cao X. Molecular detection and characterization of Coxiella burnetii in aborted samples of livestock in China. Acta Trop 2024; 254:107163. [PMID: 38428630 DOI: 10.1016/j.actatropica.2024.107163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/14/2023] [Accepted: 02/27/2024] [Indexed: 03/03/2024]
Abstract
Coxiella burnetii is the causative agent of zoonotic Q fever. Animals are the natural reservoirs of C. burnetii, and domestic livestock represent the major sources of human infection. C. burnetii infection in pregnant females may causes abortion during late pregnancy, whereby massive shedding of C. burnetii with abortion products becomes aerosolized and persists in the environment. Therefore, monitoring and surveillance of this infection in livestock is important for the prevention of the C. burnetii transmission. Previous serological surveys have shown that C. burnetii infection is endemic in livestock in China. However, few data are available on the diagnosis of C. burnetii as a cause of abortion by molecular methods in livestock. To get a better understanding of the impact of C. burnetii infection on domestic livestock in China, a real-time PCR investigation was carried out on collected samples from different domestic livestock suffering abortion during 2021-2023. A total of 338 samples collected from eight herds of five livestock species were elected. The results showed that 223 (66 %) of the collected samples were positive for C. burnetii DNA using real-time PCR. For the aborted samples, 82 % (128/15) of sheep, 81 % (34/42) of goats, 44 % (15/34) of cattle, 69 % (18/26) of camels, and 50 % (17/34) of donkeys were positive for C. burnetii. Besides, 44 % (8/18) and 4 % (1/25) of asymptomatic individuals of sheep and donkey were also positive for C. burnetii. In addition, the positive samples were further confirmed by amplification and sequencing of the C. burnetii-specific isocitrate dehydrogenase (icd) gene. Phylogenetic analysis based on specific gene fragments of icd genes revealed that the obtained sequences in this study were clustered into two different groups associated with different origin of hosts and geographic regions. This is the first report confirming that C. burnetii exists in aborted samples of sheep, goats, cattle, donkeys and camels in China. Further studies are needed to fully elucidate the epidemiology of this pathogen in livestock as well as the potential risks to public health.
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Affiliation(s)
- Ping Liu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jinyan Wu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Weimin Ma
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Yamin Yang
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Lv Lv
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jiang Cai
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Zhijie Liu
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jijun He
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Youjun Shang
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Zhaocai Li
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
| | - Xiaoan Cao
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
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Farinhas JH, de França DA, Serpa MC, Biondo LM, Doline FR, Giuffrida R, Santarém VA, Dos Santos AP, Labruna MB, Kmetiuk LB, Biondo AW. One Health approach to Coxiella burnetii in Brazilian indigenous communities. Sci Rep 2024; 14:10142. [PMID: 38698247 PMCID: PMC11066074 DOI: 10.1038/s41598-024-60850-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 04/29/2024] [Indexed: 05/05/2024] Open
Abstract
Indigenous health has posted complex challenges worldwide, particularly due to historical economic, territorial, social and environmental processes, which may lead to emergence and reemergence of pathogens. In addition to few Coxiella burnetii serosurveys in vulnerable populations, especially in developing tropical countries, no comprehensive One Health approach has focused on human-animal infection along with potential environmental determinants. Accordingly, this study aimed to assess the seroprevalence of anti-C. burnetii antibodies in indigenous populations and their dogs from 10 indigenous communities distributed in southern and southeastern Brazil, along with the correspondent healthcare professionals. In overall, 8/893 (0.90%; 95% CI 0.45-1.76) indigenous and 1/406 (0.25%) dog samples were seropositive, with 7/343 (2.04%) individuals the 1/144 (0.69%) dog from the Ocoy community, located in the city of São Miguel do Iguaçu, bordering Argentina at south, and far 10 km at west from Paraguay. All 84 healthcare professionals tested seronegative.
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Affiliation(s)
- João Henrique Farinhas
- Graduate College of Cell and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil
| | - Danilo Alves de França
- Department of Animal Production and Preventive Veterinary Medicine, School of Veterinary Medicine and Animals Science, São Paulo State University, Botucatu, SP, 18618-681, Brazil
| | - Maria Carolina Serpa
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, 05508-270, Brazil
| | - Leandro Meneguelli Biondo
- National Institute of the Atlantic Forest (INMA), Brazilian Ministry of Science, Technology, and Innovation, Santa Teresa, ES, 29650-000, Brazil
| | - Fernando Rodrigo Doline
- Graduate College of Cell and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil
| | - Rogério Giuffrida
- Graduate College in Animal Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, , São Paulo, Brazil
| | - Vamilton Alvares Santarém
- Graduate College in Animal Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, , São Paulo, Brazil
| | | | - Marcelo B Labruna
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, 05508-270, Brazil
| | - Louise Bach Kmetiuk
- Graduate College of Cell and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil
| | - Alexander Welker Biondo
- Graduate College of Cell and Molecular Biology, Federal University of Paraná (UFPR), Curitiba, PR, 80035-050, Brazil.
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, 47907, USA.
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Hecker YP, González-Ortega S, Cano S, Ortega-Mora LM, Horcajo P. Bovine infectious abortion: a systematic review and meta-analysis. Front Vet Sci 2023; 10:1249410. [PMID: 37841464 PMCID: PMC10570746 DOI: 10.3389/fvets.2023.1249410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023] Open
Abstract
The aim of the present systematic review and meta-analysis was to identify the main infectious agents related to bovine abortion worldwide in the period between 2000 and 2022. First, we investigated the global prevalence of infectious agents related to bovine abortion. For this analysis, only 27 articles detected of a wide panel of agents were included. The random effects model revealed that the estimated prevalence of the abortifacient agents in bovine abortion was 45.7%. The heterogeneity among studies was high, but Egger's test showed that there was no publication bias, even though the total number of samples analyzed in these articles was variable. There was no significant effect of the year of the study publication on the estimated prevalence, although an increasing trend was observed over time, possibly due to the implementation of new diagnostic techniques. Then, we analyzed the prevalence of the main transmissible agents in bovine abortion. For this analysis, 76 studies that analyzed 19,070 cases were included. Some infectious agent was detected in 7,319 specimens, and a final diagnosis was reached in 3,977 of these, when both the infectious agent and compatible histopathological changes were detected. We found that Neospora caninum was the most detected agent (22.2%), followed by opportunistic bacteria (21.4%), Chlamydiaceae family (10.9%) and Coxiella burnetii (9.5%). Regarding viral agents, bovine herpes virus type 1 and bovine viral diarrhea displayed similar prevalence rates (approximately 5%). After considering the description of specific histopathological changes, our analyzes showed that N. caninum was a confirmed cause of abortion in 16.7% of the analyzed cases, followed by opportunistic bacteria (12.6%) and Chlamydia spp. (6.8%); however, C. burnetii was only confirmed as a cause of abortion in 1.1% of the cases. For all agents, the heterogeneity among studies was high, and the subgroup analyzes discarded the diagnostic method as the cause of such heterogeneity. This study provides knowledge about the global prevalence of the different infectious agents related to bovine abortion, the most coming of which is N. caninum. In addition, this review reveals the existing deficiencies in the diagnosis of bovine abortion that must be addressed in the future.
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Affiliation(s)
- Yanina Paola Hecker
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
- Institute of Innovation for Agricultural Production and Sustainable Development (IPADS Balcarce), INTA-CONICET, Balcarce, Argentina
| | - Sara González-Ortega
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Santiago Cano
- Computing Services, Research Support Center, Complutense University of Madrid, Madrid, Spain
| | - Luis Miguel Ortega-Mora
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
| | - Pilar Horcajo
- SALUVET, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Madrid, Spain
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Ramatla T, Khumalo ZTH, Matshotshi A, Lekota KE, Taioe MO, Thekisoe O. Molecular detection of Coxiella burnetii and Coxiella species in rats and chickens from poultry farms in North West Province, South Africa. Vet Med Sci 2023; 9:2185-2191. [PMID: 37592439 PMCID: PMC10508476 DOI: 10.1002/vms3.1192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 05/02/2023] [Accepted: 06/03/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND Coxiella burnetii is a bacterial pathogen that causes query fever and coxiellosis in humans and animals, respectively. There is a scarcity of studies on the prevalence of C. burnetii infections in rats and chickens in South Africa. OBJECTIVE The aim of this study was to determine the occurrence of C. burnetii in rats and chickens sampled from poultry farms in the North West Province of South Africa. METHODS DNA was extracted from rodent kidneys (n = 68) and chicken faeces (n = 52). Two rodent pest species, namely Rattus rattus and Rattus tanezumi, were identified by analysis of CO1 gene sequences. Detection of C. burnetii was carried out using polymerase chain reaction assays targeting 23S rRNA, 16S rRNA and IS111 markers. RESULTS C. burnetii was detected in 16.2%, 8.8% and 25% of R. rattus, R. tanezumi and chickens, respectively. CONCLUSIONS The findings in this study demonstrate that rodents and chickens are harbouring C. burnetii at sampled poultry farms. There should be frequent screening for C. burnetii in poultry operations. The likelihood of future transmission between rodents and chickens, including humans, also needs to be investigated.
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Affiliation(s)
- Tsepo Ramatla
- Unit for Environmental Sciences and ManagementNorth‐West UniversityPotchefstroomSouth Africa
| | - Zamantungwa T. H. Khumalo
- Vectors and Vector‐borne Diseases Research Programme, Department of Veterinary Tropical DiseasesUniversity of PretoriaOnderstepoortSouth Africa
- Study OperationsClinvet InternationalBloemfonteinSouth Africa
| | - Asiashu Matshotshi
- Department of Life and Consumer SciencesUniversity of South AfricaFloridaSouth Africa
| | - Kgaugelo E. Lekota
- Unit for Environmental Sciences and ManagementNorth‐West UniversityPotchefstroomSouth Africa
| | - Moeti O. Taioe
- Unit for Environmental Sciences and ManagementNorth‐West UniversityPotchefstroomSouth Africa
- Epidemiology, Parasites and VectorsAgricultural Research Council, Onderstepoort Veterinary ResearchOnderstepoortSouth Africa
| | - Oriel Thekisoe
- Unit for Environmental Sciences and ManagementNorth‐West UniversityPotchefstroomSouth Africa
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de França DA, Mioni MDSR, Fornazari F, Duré AÍDL, Silva MVF, Possebon FS, Richini-Pereira VB, Langoni H, Megid J. Seropositivity for Coxiella burnetii in suspected patients with dengue in São Paulo state, Brazil. PLoS Negl Trop Dis 2022; 16:e0010392. [PMID: 35536865 PMCID: PMC9122222 DOI: 10.1371/journal.pntd.0010392] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 05/20/2022] [Accepted: 04/04/2022] [Indexed: 11/25/2022] Open
Abstract
Q fever and brucellosis are zoonoses that cause fever and other systemic clinical signs in humans; their occurrences are neglected and the differential diagnosis for some diseases is disregarded. This study aimed to investigate the seropositivity for Coxiella burnetii and Brucella spp. antibodies in patients suspected of dengue from 38 municipalities in the state of São Paulo, Brazil. The samples (n = 604) were obtained by convenience from the Adolfo Lutz Institute serum bank. Sera were subjected to an indirect immunofluorescence assay (IFA) using in-house and commercial diagnostic protocols to evaluate C. burnetii positivity. For Brucella spp., sera were subjected to rapid plate serum agglutination with buffered acidified antigen (AAT), slow tube serum agglutination (SAL), and 2-mercaptoethanol (2-ME) techniques. Associations and statistical inferences of the results were performed by logistic regression according to the clinical and demographic variables collected from the patients. Statistical analyses were performed using Statistical Analysis Software (SAS) and associations were considered when p value was <0.05. In all, 129 patients showed positive results for Q fever, indicating a seropositivity of 21.4% (95% CI 18.15–24.85). Patients with 14–20 days of symptoms had 2.12 (95% CI 1.34–3.35) times more chances of being seropositive for Q fever than patients with 7–13 days, and patients with 21–27 days of fever had 2.62 (95% CI 1.27–5.41) times more chances of being seropositive for Q fever than patients with 7–13 days. For the other variables analyzed, there were no significant associations between the groups. No positivity for brucellosis was observed. This is the most comprehensive study of people seropositive for Q fever in São Paulo state and provides additional data for the medical community in Brazil. It is suggested that Q fever may be an important differential diagnosis of febrile illnesses in the region, demanding the government’s attention and investment in health. Brazil is a tropical country with a warm climate and large animal herds that favor many zoonotic agents that circulate in the territory. Due to the high prevalence of some tropical diseases, such as dengue, malaria, and chikungunya, important zoonoses have been neglected during the clinical evaluation of patients, resulting in misdiagnosis. Examples include Q fever and brucellosis, zoonoses that occur in animals in Brazil and are easily transmitted to humans through contaminated air and food products. There is not much data on these diseases in humans in the country representing their actual health situation. The current knowledge is supported by a few serological surveys developed by research groups and case reports. In this study, sera from patients with fever of unknown origin were positive for Q fever and brucellosis. The authors found that, contrary to brucellosis, Q fever has affected many people in São Paulo, the most populous state in the country. In addition, other findings regarding patient profile and disease behavior have been established. This research highlights the need for surveillance and control of Q fever in humans and animals to prevent acute cases and treat chronic patients.
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Affiliation(s)
- Danilo Alves de França
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
| | - Mateus de Souza Ribeiro Mioni
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
- * E-mail: (MM); (JM)
| | - Felipe Fornazari
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
| | - Ana Íris de Lima Duré
- Octávio Magalhães Institute, Ezequiel Dias Foundation, Belo Horizonte, Minas Gerais, Brazil
| | | | - Fábio Sossai Possebon
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
| | | | - Helio Langoni
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
| | - Jane Megid
- Department of Veterinary Hygiene and Public Health, Paulista State University “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brazil
- * E-mail: (MM); (JM)
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Saegerman C, Grégoire F, Delooz L. Diagnosis of Coxiella burnetii Cattle Abortion: A One-Year Observational Study. Pathogens 2022; 11:pathogens11040429. [PMID: 35456104 PMCID: PMC9032501 DOI: 10.3390/pathogens11040429] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/17/2022] [Accepted: 03/31/2022] [Indexed: 02/06/2023] Open
Abstract
Q fever is a zoonosis occurring worldwide in livestock. Often neglected in differential diagnoses, Q fever can persist in herds causing financial losses. In ruminants, well-known manifestations of Q fever are metritis, infertility, abortion, stillbirth and delivery of a weak or premature calf. In cattle, Q fever is frequently asymptomatic and/or under-reported. Few studies are available on the diagnosis of Coxiella burnetii as a cause of abortion in cattle using polymerase chain reaction (PCR) for pathogen detection while enzyme-linked immunosorbent assay (ELISA) is used to assess exposure. Moreover, existing studies include a relatively small number of abortions. The aim of this study is to assess, in the southern part of Belgium, during a year, the performance of diagnosis of C. burnetii as a cause of abortion and the putative benefit of enhanced serology using anamnesis (animal patient data, and present, past and environmental history). A one-year random selection of 1212 abortions was analysed both with the PCR method (tissues from fetuses) and two commercialised ELISAs (sera from the mothers). Relative sensitivity and specificity of the ELISA tests were assessed using PCR as the reference test. The prevalence of C. burnetii PCR positive was 8.5% (95% CI: 6.99–10.21). The diagnostic value of the ELISA tests was assessed using the area under the receiver operating characteristic curve (AUC-ROC). The sensitivity, specificity and AUC-ROC were similar for both ELISA tests. The diagnostic capacity of the ELISA was confirmed and slightly enhanced if anamnestic information was integrated with a unique scoring index system. A high negative predictive value was demonstrated and a significant reverse association between Ct values and a percentage of the ratio of the optical density between the sample and the positive control (ELISA A or ELISA B) enabling the use of ELISA as an exclusion diagnostic. This study is original by integrating the serological result and the anamnesis in a single index. It opens a new window in enhanced veterinary clinical decision-making.
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Affiliation(s)
- Claude Saegerman
- Fundamental and Applied Research for Animal and Health (FARAH) Center, University of Liège, B-4000 Liege, Belgium;
- Correspondence:
| | - Fabien Grégoire
- Regional Association for Animal Registration and Health, B-5530 Ciney, Belgium;
| | - Laurent Delooz
- Fundamental and Applied Research for Animal and Health (FARAH) Center, University of Liège, B-4000 Liege, Belgium;
- Regional Association for Animal Registration and Health, B-5530 Ciney, Belgium;
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