Global Epidemiology of Campylobacter Infection
01 Jul 2015-Clinical Microbiology Reviews (American Society for Microbiology)-Vol. 28, Iss: 3, pp 687-720
TL;DR: Overall, campylobacteriosis is still one of the most important infectious diseases that is likely to challenge global health in the years to come.
Abstract: Campylobacter jejuni infection is one of the most widespread infectious diseases of the last century. The incidence and prevalence of campylobacteriosis have increased in both developed and developing countries over the last 10 years. The dramatic increase in North America, Europe, and Australia is alarming, and data from parts of Africa, Asia, and the Middle East indicate that campylobacteriosis is endemic in these areas, especially in children. In addition to C. jejuni, there is increasing recognition of the clinical importance of emerging Campylobacter species, including Campylobacter concisus and Campylobacter ureolyticus. Poultry is a major reservoir and source of transmission of campylobacteriosis to humans. Other risk factors include consumption of animal products and water, contact with animals, and international travel. Strategic implementation of multifaceted biocontrol measures to reduce the transmission of this group of pathogens is paramount for public health. Overall, campylobacteriosis is still one of the most important infectious diseases that is likely to challenge global health in the years to come. This review provides a comprehensive overview of the global epidemiology, transmission, and clinical relevance of Campylobacter infection.
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TL;DR: The effects of prebiotic galacto-oligosaccharide (GOS) on broiler chickens colonized with C. jejuni are reported to provide a reduction in the number of campylobacters colonizing the gastrointestinal tract and reduce the likelihood of human exposure to an infectious dose.
Abstract: Worldwide Campylobacter jejuni is a leading cause of foodborne disease. Contamination of chicken meat with digesta from C. jejuni-positive birds during slaughter and processing is a key route of transmission to humans through the food chain. Colonization of chickens with C. jejuni elicits host innate immune responses that may be modulated by dietary additives to provide a reduction in the number of campylobacters colonizing the gastrointestinal tract and thereby reduce the likelihood of human exposure to an infectious dose. Here we report the effects of prebiotic galacto-oligosaccharide (GOS) on broiler chickens colonized with C. jejuni when challenged at either an early stage in development at 6 days of age or 20 days old when campylobacters are frequently detected in commercial flocks. GOS-fed birds had increased growth performance, but the levels of C. jejuni colonizing the cecal pouches were unchanged irrespective of the age of challenge. Dietary GOS modulated the immune response to C. jejuni by increasing cytokine IL-17A expression at colonization. Correspondingly, reduced diversity of the cecal microbiota was associated with Campylobacter colonization in GOS-fed birds. In birds challenged at 6 days-old the reduction in microbial diversity was accompanied by an increase in the relative abundance of Escherichia spp. Whilst immuno-modulation of the Th17 pro-inflammatory response did not prevent C. jejuni colonization of the intestinal tract of broiler chickens, the study highlights the potential for combinations of prebiotics, and specific competitors (synbiotics) to engage with the host innate immunity to reduce pathogen burdens.
8 citations
Cites background from "Global Epidemiology of Campylobacte..."
...are recognized as the major contributor to bacterial foodborne illness worldwide (Kaakoush et al., 2015)....
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TL;DR: The high observed genetic diversity of Campylobacter spp.
Abstract: 1. The real burden of Campylobacter spp. in Lebanon is still unknown. The aims of this study were to unravel the epidemiology of Campylobacter spp. in broilers at slaughterhouses in Tripoli, North of Lebanon and to characterise their antibiotic resistance profiles.2. From May to November 2015, sampling was performed through five repeated surveys from 15 slaughterhouses that sold chicken directly to Lebanese customers. Isolates were subjected to pulsed field gel electrophoresis (PFGE) and flaA-restriction fragment length polymorphism (flaA-RFLP).3. All investigated slaughterhouses were found to be positive for Campylobacter spp. Campylobacter coli was the predominant species (38 isolates) followed by C. jejuni (eight isolates). A noticeable level of resistance was detected among isolates against ciprofloxacin (97% of C. coli and 87.5% of C. jejuni), amoxicillin (89% of C. coli and 75% of C. jejuni), gentamicin (79% of C. coli and 50% of C. jejuni), and co-amoxiclav (24% of C. coli and 25% of C. jejuni). Erythromycin and ertapenem resistance were observed only in C. coli with the following percentages 74% and 13% respectively, but not in C. jejuni. PFGE and flaA-RFLP using DdeI as restriction enzyme divided the strains into 27 and 25 types respectively.4. The high observed genetic diversity of Campylobacter spp. revealed the complexity of the spread of this genus in broilers. This study highlighted the pressing need to monitor antibiotic resistance and to ensure food safety from 'farm to fork' in Lebanon.
8 citations
Cites background from "Global Epidemiology of Campylobacte..."
...However, a wide range of serious complications has been associated with these bacteria, including Guillain-Barré and Miller Fisher syndromes (Kaakoush et al. 2015)....
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TL;DR: Findings showed that Campylobacter were quite prevalent in both stray and pet dogs and cats which may contaminate other animals and spread in the environment as Campyloblacter.
Abstract: Aims: Campylobacter is the most widely reported zoonotic bacterial agent that causes enteric disease in humans worldwide with millions of cases recorded far exceeding salmonellosis in Europe and United States. The objective of this study was to determine the occurrence of Campylobacter in dogs and cats and their associated risk factors. Methodology and results: A total of 101 rectal swabs were collected from both pets (n=40) and stray dogs (n=61) for the study. Similarly, a total of 86 rectal swabs were taken from stray cats (n=46) and pet cats (n=40) from client pets at a university veterinary hospital and from stray dogs and cats from animal shelters. Campylobacter were isolated by culture, identified by biochemical tests and confirmed and speciated, using mPCR assay. The result showed occurrence of Campylobacter in stray dogs and stray cats were 16.3% and 32.6% respectively, while in pet dogs and cats were 12.5 % each. Based on the mPCR assay, three species of Campylobacter were identified in dogs namely Campylobacter upsaliensis (66.6%), C. jejuni (6.7%) and C. heliviticus (20%), while C. upsaliensis (55%), C. helviticus (20%) and C. jejuni (6.7%) were identified in cats. The risk factors for the presence of Campylobacter in the animals were analysed but none was significantly associated, however the occurrence in cats was found higher in adults, females, those kept outdoors and residing in town areas, multipets household, cats with no history of being given antibiotics in past infections and being fed on raw meat and fish while the occurrence of Campylobacter was high in dogs of local breeds, females, of young age, being kept outdoors and fed raw meat and fish. Conclusion, significance and impact of study: These findings showed that Campylobacter were quite prevalent in both stray and pet dogs and cats which may contaminate other animals and spread in the environment as Campylobacters. It is of public health concern as humans can contract the disease if they do not practice proper hygiene after coming into contact with an infected animal or contaminated environment.
8 citations
Cites background from "Global Epidemiology of Campylobacte..."
...The incidence of campylobacteriosis and intestinal carriage of Campylobacter in pets and stray dogs is of important public health importance both in developed and developing countries (Kaakoush et al., 2015) ....
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...carriage of Campylobacter in pets and stray dogs is of important public health importance both in developed and developing countries (Kaakoush et al., 2015) ....
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TL;DR: The present study highlights the burden of Campylobacter species in the country and higher rate of resistance among investigated isolates and Designing appropriate prevention strategies and further local in-depth studies are recommended to establish actual epidemiological burden of the bacteria in the nation.
Abstract: Campylobacter jejuni and Campylobacter coli accounts for most cases of human gastrointestinal infections. The infection occurs through ingestion of contaminated food or water, and direct contact with feces of infected animal or human. Regardless of few local reports of Campylobacter and its antimicrobial susceptibility profile, there is no comprehensive data that show the burden of Campylobacter infection at national level in Ethiopia. This systemic review and meta-analysis aimed to determine the pooled prevalence of Campylobacter and its resistance patterns in Ethiopia from different sources. A comprehensive literature search of PubMed, Google scholar, Science direct and Google engine search was conducted for studies published from 2000 to July 30, 2020 on prevalence and antimicrobial susceptibility of Campylobacter in human, animal and food. The study was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) Checklist. Data from articles was extracted using a standardized data extraction format. The quality of the studies was assessed based on the Newcastle–Ottawa scale. The Q test and I2 test statistic were used to test heterogeneity across studies. The Pooled estimate of prevalence of Campylobacter species and its antimicrobial susceptibility profile was computed by a random effects model using STATA 16.0 software. Results were presented in forest plot, tables, funnel plot and figures with 95% confidence interval. A total of 291 articles were retrieved initially. The pooled prevalence of Campylobacter species from different sources was 10.2% (95% CI 3.79, 16.51). In this meta-analysis, the lowest prevalence was 6.0% whereas the highest prevalence was 72.7%. In the sub-group analysis, the pooled prevalence was similar in Amhara and Oromia region, higher in Gambella and lower in Sidama. Prevalence of Campylobacter was higher in animals (14.6%) compared to humans (9%). The pooled antimicrobial resistance rates of Campylobacter species to different antimicrobials ranged from 2.9–100%. Overall, higher rate of resistance was to cephalothin (67.2%), gentamicin (67.2%), and trimethoprim-sulfamethoxazole (33.3%) in Campylobacter isolates from all sources. In isolates from human, resistance to cephalothin was 83% followed by amoxicillin (80%), amoxicillin-clavulnate (36%), trimethoprim-sulfamethpxazole (32%), clindamycin (31%) and ceftriaxone (28%). On the other hand, higher rate of resistance to penicillin (100%), cephalothin (60%), ciprofloxacin (71.2%), and trimethoprim-sulfamethoxazole (39%) was recorded in isolates from animals. The present study highlights the burden of Campylobacter species in the country and higher rate of resistance among investigated isolates. Designing appropriate prevention strategies and further local in-depth studies are recommended to establish actual epidemiological burden of the bacteria in the country.
8 citations
Cites background from "Global Epidemiology of Campylobacte..."
...The use of antimicrobials in agriculture led to a dramatic increase in antimicrobials resistance in several human pathogens originating from animals, including Campylobacter species [7]....
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...However, antimicrobials are employed in patients with severe, persistent, and extra intestinal campylobacteriosis and in immune-compromised patients [7]....
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...Poultry is a major reservoir and source of transmission of campylobacteriosis to humans [7]....
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...Guillain–Barre syndrome, reactive arthritis, and irritable bowel syndrome) [6, 7]....
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TL;DR: The CampySource project as discussed by the authors aims to identify risk factors for human Campylobacter infection in Australia, and investigate locally relevant risk factors and those significant in international studies in a case-control study.
Abstract: Introduction The CampySource project aims to identify risk factors for human Campylobacter infection in Australia. We will investigate locally relevant risk factors and those significant in international studies in a case–control study. Case isolates and contemporaneous isolates from food and animal sources will be sequenced to conduct source attribution modelling, and findings will be combined with the case–control study in a source-assigned analysis. Methods and analysis The case–control study will include 1200 participants (600 cases and 600 controls) across three regions in Australia. Cases will be recruited from campylobacteriosis notifications to health departments. Only those with a pure and viable Campylobacter isolate will be eligible for selection to allow for whole genome sequencing of isolates. Controls will be recruited from notified cases of influenza, frequency matched by sex, age group and geographical area of residence. All participants will be interviewed by trained telephone interviewers using a piloted questionnaire. We will collect Campylobacter isolates from retail meats and companion animals (specifically dogs), and all food, animal and human isolates will undergo whole genome sequencing. We will use sequence data to estimate the proportion of human infections that can be attributed to animal and food reservoirs (source attribution modelling), and to identify spatial clusters and temporal trends. Source-assigned analysis of the case–control study data will also be conducted where cases are grouped according to attributed sources. Ethics and dissemination Human and animal ethics have been approved. Genomic data will be published in online archives accompanied by basic metadata. We anticipate several publications to come from this study.
8 citations
Cites background from "Global Epidemiology of Campylobacte..."
...Most countries in the European Union consistently report annual campylobacteriosis notification rates below 100/100 000 population.(2) Two species of Campylobacter—Campylobacter jejuni and C....
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References
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University of Maryland, Baltimore1, Centers for Disease Control and Prevention2, International Centre for Diarrhoeal Disease Research, Bangladesh3, Aga Khan University4, Medical Research Council5, University of Barcelona6, GlaxoSmithKline7, United States Department of Veterans Affairs8, Center for Drug Evaluation and Research9, University of Bergen10, Norwegian Institute of Public Health11, Royal Children's Hospital12
TL;DR: Interventions targeting five pathogens can substantially reduce the burden of moderate-to-severe diarrhoea and suggest new methods and accelerated implementation of existing interventions (rotavirus vaccine and zinc) are needed to prevent disease and improve outcomes.
2,766 citations
"Global Epidemiology of Campylobacte..." refers background in this paper
...with moderate to severe diarrhea in children from Kolkata, India, Mirzapur, Bangladesh, and Karachi, Pakistan (66)....
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...In addition, in a prospective case-control study conducted between 1 December 2007 and 3 March 2011 to identify the etiology of diarrhea in children aged 0 to 59 months, C. jejuni was reported to be significantly associated July 2015 Volume 28 Number 3 cmr.asm.org 693Clinical Microbiology Reviews on M arch 21, 2021 by guest http://cm r.asm .org/ D ow nloaded from with moderate to severe diarrhea in children from Kolkata, India, Mirzapur, Bangladesh, and Karachi, Pakistan (66)....
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TL;DR: Two important processes have occurred to legitimize these conditions, and to increase attention toward the research and clinical care of patients with functional gastrointestinal disorders (FGID), a shift in conceptualizing these disorders from a disease-based, reductionistic model, to a more integrated, biopsychosocial model of illness.
2,274 citations
TL;DR: Overabundance of Fusobacterium sequences in tumor versus matched normal control tissue is verified by quantitative PCR analysis from a total of 99 subjects, and a positive association with lymph node metastasis is observed.
Abstract: An estimated 15% or more of the cancer burden worldwide is attributable to known infectious agents. We screened colorectal carcinoma and matched normal tissue specimens using RNA-seq followed by host sequence subtraction and found marked over-representation of Fusobacterium nucleatum sequences in tumors relative to control specimens. F. nucleatum is an invasive anaerobe that has been linked previously to periodontitis and appendicitis, but not to cancer. Fusobacteria are rare constituents of the fecal microbiota, but have been cultured previously from biopsies of inflamed gut mucosa. We obtained a Fusobacterium isolate from a frozen tumor specimen; this showed highest sequence similarity to a known gut mucosa isolate and was confirmed to be invasive. We verified overabundance of Fusobacterium sequences in tumor versus matched normal control tissue by quantitative PCR analysis from a total of 99 subjects (p = 2.5 × 10(-6)), and we observed a positive association with lymph node metastasis.
1,535 citations
TL;DR: The composition of the microbiota in colorectal carcinoma is characterized using whole genome sequences from nine tumor/normal pairs and Fusobacterium sequences were enriched in carcinomas, confirmed by quantitative PCR and 16S rDNA sequence analysis of 95 carcinoma/normal DNA pairs.
Abstract: The tumor microenvironment of colorectal carcinoma is a complex community of genomically altered cancer cells, nonneoplastic cells, and a diverse collection of microorganisms. Each of these components may contribute to carcinogenesis; however, the role of the microbiota is the least well understood. We have characterized the composition of the microbiota in colorectal carcinoma using whole genome sequences from nine tumor/normal pairs. Fusobacterium sequences were enriched in carcinomas, confirmed by quantitative PCR and 16S rDNA sequence analysis of 95 carcinoma/normal DNA pairs, while the Bacteroidetes and Firmicutes phyla were depleted in tumors. Fusobacteria were also visualized within colorectal tumors using FISH. These findings reveal alterations in the colorectal cancer microbiota; however, the precise role of Fusobacteria in colorectal carcinoma pathogenesis requires further investigation.
1,527 citations
TL;DR: Campylobacters are a relatively unrecognised cause of acute enteritis, but these findings suggest that they may be a common cause, and poultry may be the primary source of the organism.
Abstract: By selective culture campylobacters (C jejuni and C coli) were isolated from the faeces of 57 (7-1%) out of 803 unselected patients with diarrhoea; none were isolated from 194 people who had not got diarrhoea. Specific agglutinins were found in the sera of 31 out of 38 patients with campylobacter enteritis and 10 of them had a rising titre. Half the patients were aged 15 to 44 years, but the incidence was highest in young children. All the patients with campylobacters had a distinctive clinical illness with severe abdominal pain. Campylobacters are a relatively unrecognised cause of acute enteritis, but these findings suggest that they may be a common cause. Spread of infection was observed within 12 out of 29 households, and in these cases children were usually implicated. Several patients were apparently infected from chickens, both live and dressed, and poultry may be the primary source of the organism. In two cases dogs with diarrhoea were found to be infected with strains indistinguishable from their human contacts. Ten patients acquired their infections while travelling abroad.
1,431 citations