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Dillon B, Keefer L, Malone L. Double Trouble: Ten-Year-Old Girl With Chronic Diarrhea and Acute Abdominal Pain. Clin Pediatr (Phila) 2022; 61:654-658. [PMID: 35678012 PMCID: PMC9397393 DOI: 10.1177/00099228221100063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Bridget Dillon
- Department of Pediatrics, Penn State Hershey Children’s Hospital, Hershey, PA, USA,Bridget Dillon, Department of Pediatrics, Penn State Hershey Children’s Hospital, 500 University Drive, P.O. Box 850, Hershey, PA 17033-0850, USA.
| | - Laura Keefer
- Department of Pediatrics, Penn State Hershey Children’s Hospital, Hershey, PA, USA
| | - Leah Malone
- Department of Pediatrics, Penn State Hershey Children’s Hospital, Hershey, PA, USA
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Braima K, Harvie S, Trew I, Tan H, Gore C, Zahedi A, Oskam C, Lawler S, Reid S, Ryan U. Knowledge, Attitude and Practices Towards Cryptosporidium Among Public Swimming Pool Patrons and Staff in Western Australia. Acta Parasitol 2022; 67:460-467. [PMID: 34713427 DOI: 10.1007/s11686-021-00482-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE There is a dearth of research conducted on the Knowledge, Attitude and Practices (KAP) of swimming pool patrons and staff to determine their understanding of the importance of Cryptosporidium and its transmission in swimming pools. METHODS We conducted a KAP survey of public swimming pool patrons (n = 380) and staff (n = 40) attending five public swimming pools in Western Australia (WA). RESULTS Knowledge, attitudes and practices (KAP) of Cryptosporidium varied between patrons and staff but were generally limited. Only 26.1% and 25.0% of patrons and staff had heard of Cryptosporidium, while 17.4% and 10.0% knew that it causes diarrhoea, respectively. Thirty-one percent of patrons were aware of their pool policy concerning gastroenteritis and Cryptosporidium, compared to 62.5% of staff. Less than 50% of patrons demonstrated awareness of how features within the pool environment were relevant to the control of Cryptosporidium. Only about a third of patrons (35%) and staff (37.5%) were aware that showering before swimming reduced the risk of gastroenteritis. CONCLUSION Raising awareness about hygiene-related practices through the delivery of targeted health education messages to the general public is essential to reduce the burden of Cryptosporidium infections in aquatic environments.
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Protozoan infections are under-recognized in Swedish patients with gastrointestinal symptoms. Eur J Clin Microbiol Infect Dis 2020; 39:2153-2160. [PMID: 32638222 PMCID: PMC7561559 DOI: 10.1007/s10096-020-03974-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/29/2020] [Indexed: 11/29/2022]
Abstract
In acute gastroenteritis (GE), identification of the infectious agent is important for patient management and surveillance. The prevalence of GE caused by protozoa may be underestimated in Swedish patients. The purpose was to compare the prevalence of E. histolytica, Cryptosporidium spp., G. intestinalis, and C. cayetanensis in samples from patients where the clinician had requested testing for gastrointestinal parasites only (n = 758) to where testing for bacterial GE only (n = 803) or where both parasite and bacterial testing (n = 1259) was requested and a healthy control group (n = 197). This prospective cohort study was conducted in Region Jönköping County, Sweden (October 2018–March 2019). Fecal samples were analyzed with microscopy and real-time PCR. Cryptosporidium spp. was detected in 16 patients in the bacterial GE group and in 13 in the both bacterial and parasite group; no cases were detected in the group were only parasite infection was suspected. C. cayetanensis was detected in two patients in the bacterial GE group. One case of E. histolytica was detected in the bacterial group and one in the both bacterial and parasite group. G. intestinalis was detected in 14 patients in the parasite only group, 12 in the both parasite and bacterial group, three in the bacterial GE group, and one in the control group. Diarrhea caused by protozoa, especially Cryptosporidium was under–recognized by clinicians and is likely more common than hitherto estimated in Sweden. A more symptom-based diagnostic algorithm may increase detection and knowledge about protozoan infections.
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Ögren J, Dienus O, Matussek A. Optimization of routine microscopic and molecular detection of parasitic protozoa in SAF-fixed faecal samples in Sweden. Infect Dis (Lond) 2019; 52:87-96. [DOI: 10.1080/23744235.2019.1682188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Jessica Ögren
- Clinical Microbiology, Region Jönköping County, Jönköping, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Olaf Dienus
- Clinical Microbiology, Region Jönköping County, Jönköping, Sweden
| | - Andreas Matussek
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Laboratory Medicine, Region Jönköping County, Jönköping, Sweden
- Karolinska University Laboratory, Stockholm, Sweden
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Ryan U, Lawler S, Reid S. Limiting swimming pool outbreaks of cryptosporidiosis - the roles of regulations, staff, patrons and research. JOURNAL OF WATER AND HEALTH 2017; 15:1-16. [PMID: 28151435 DOI: 10.2166/wh.2016.160] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cryptosporidium is the leading cause of swimming pool outbreaks of gastroenteritis. Transmission occurs through the ingestion of oocysts that are passed in the faeces of an infected person or animal when an accidental faecal release event occurs. Cryptosporidium parasites present specific challenges for infection control as oocysts are highly resistant to chlorine levels used for pool disinfection, infected individuals can shed large numbers of oocysts, there is a long incubation period and shedding of oocysts occurs even after symptom resolution. The purposes of this review are to identify key barriers to limiting swimming pool-associated outbreaks of cryptosporidiosis and to outline needs for research and collaboration to advance co-ordinated management practices. We reviewed swimming pool-associated cryptosporidiosis outbreaks, disinfection teachniques, current regulations and the role of staff and patrons. Key barriers to limiting swimming pool-associated outbreaks of cryptosporidiosis are a lack of uniform national and international standards, poor adherence and understanding of regulations governing staff and patron behaviour, and low levels of public knowledge and awareness.
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Affiliation(s)
- Una Ryan
- School of Veterinary and Life Sciences, Murdoch University, Perth, Australia E-mail:
| | - Sheleigh Lawler
- The University of Queensland, School of Public Health, Herston, Queensland 4006, Australia
| | - Simon Reid
- The University of Queensland, School of Public Health, Herston, Queensland 4006, Australia
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Sente C, Erume J, Naigaga I, Mulindwa J, Ochwo S, Magambo PK, Namara BG, Kato CD, Sebyatika G, Muwonge K, Ocaido M. Prevalence of pathogenic free-living amoeba and other protozoa in natural and communal piped tap water from Queen Elizabeth protected area, Uganda. Infect Dis Poverty 2016; 5:68. [PMID: 27485513 PMCID: PMC4971666 DOI: 10.1186/s40249-016-0162-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 06/22/2016] [Indexed: 12/14/2022] Open
Abstract
Background Pathogenic water dwelling protozoa such as Acanthamoeba spp., Hartmannella spp., Naegleria spp., Cryptosporidium spp. and Giardia spp. are often responsible for devastating illnesses especially in children and immunocompromised individuals, yet their presence and prevalence in certain environment in sub-Saharan Africa is still unknown to most researchers, public health officials and medical practitioners. The objective of this study was to establish the presence and prevalence of pathogenic free-living amoeba (FLA), Cryptosporidium and Giardia in Queen Elizabeth Protected Area (QEPA). Methods Samples were collected from communal taps and natural water sites in QEPA. Physical water parameters were measured in situ. The samples were processed to detect the presence of FLA trophozoites by xenic cultivation, Cryptosporidium oocysts by Ziehl-Neelsen stain and Giardia cysts by Zinc Sulphate floatation technique. Parasites were observed microscopically, identified, counted and recorded. For FLA, genomic DNA was extracted for amplification and sequencing. Results Both natural and tap water sources were contaminated with FLA, Cryptosporidium spp. and Giardia spp. All protozoan parasites were more abundant in the colder rainy season except for Harmannella spp. and Naegleria spp. which occurred more in the warmer months. The prevalence of all parasites was higher in tap water than in natural water samples. There was a strong negative correlation between the presence of Acanthamoeba spp., Hartmannella spp., Cryptosporidium spp. and Giardia spp. with Dissolved Oxygen (DO) (P < 0.05). The presence of Cryptosporidium spp. showed a significant positive correlation (P < 0.05) with conductivity, pH and Total Dissolved Solids (TDS); whereas the presence of Giardia spp. had only a strong positive correlation with TDS. Molecular genotyping of FLA produced 7 Acanthamoeba, 5 Echinamoeba, 2 Hartmannella, 1 Bodomorpha, 1 Nuclearia and 1 Cercomonas partial sequences. Conclusions All water collection sites were found to be contaminated with pathogenic protozoa that could possibly be the cause of a number of silent morbidities and mortalities among rural households in QEPA. This implies that water used by communities in QEPA is of poor quality and predisposes them to a variety of protozoan infections including the FLA whose public health importance was never reported, thus necessitating adoption of proper water safety measures. Electronic supplementary material The online version of this article (doi:10.1186/s40249-016-0162-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Celsus Sente
- Department of Wildlife and Aquatic Animal Resources (WAAR), School of Veterinary Medicine and Animal Resources (SVAR), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda.
| | - Joseph Erume
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
| | - Irene Naigaga
- Department of Wildlife and Aquatic Animal Resources (WAAR), School of Veterinary Medicine and Animal Resources (SVAR), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
| | - Julius Mulindwa
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda.,Department of Biochemistry and Sports Science (BSS), College of Natural Sciences (CONAS), Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Sylvester Ochwo
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
| | - Phillip Kimuda Magambo
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
| | - Benigna Gabriela Namara
- Medical Research Council (MRC)/Uganda Virus Research Institute (UVRI), Research Unit on AIDS, P.O.Box 49, Entebbe, Uganda
| | - Charles Drago Kato
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
| | - George Sebyatika
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda.,Department of Molecular Biology, Vrije Universiteit, Pleinlaan 21050, Brussels, Belgium
| | - Kevin Muwonge
- Department of Biomolecular Resources and Biolab Sciences, School of Bio-security, Biotechnical and Laboratory Sciences (SBLS), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda.,Department of Molecular Biology, Vrije Universiteit, Pleinlaan 21050, Brussels, Belgium
| | - Michael Ocaido
- Department of Wildlife and Aquatic Animal Resources (WAAR), School of Veterinary Medicine and Animal Resources (SVAR), College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, P.O.Box 7062, Kampala, Uganda
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