Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study
Introduction: The Ministry of Health, Kenya (MOH) investigated a report on acute watery diarrhea (AWD) cases at a city hotel to confirm the cause, characterize, and identify associated factors. Methods: A suspected case of cholera was defined as AWD in any person aged >2 years at the hote...
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African Field Epidemiology Network
2022-01-01
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| Series: | Journal of Interventional Epidemiology and Public Health |
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| Online Access: | https://www.afenet-journal.net/content/article/5/3/full/ |
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| author | Philip Ngere Elvis Oyugi Alexis Niyomwungere Scolastica Wabwire Adi Dahabo Daniel Langat Raphael Muli Maurice Owiny |
| author_facet | Philip Ngere Elvis Oyugi Alexis Niyomwungere Scolastica Wabwire Adi Dahabo Daniel Langat Raphael Muli Maurice Owiny |
| author_sort | Philip Ngere |
| collection | DOAJ |
| description | Introduction: The Ministry of Health, Kenya (MOH) investigated a report on acute watery diarrhea (AWD) cases at a city hotel to confirm the cause, characterize, and identify associated factors.
Methods: A suspected case of cholera was defined as AWD in any person aged >2 years at the hotel from August 31, 2017, to September 6, 2017. We took rectal swabs for laboratory confirmation and summarized the AWD data by person, place, and time. We defined a cohort of hotel staff with those who ate dinner on August 31, 2017, considered exposed and conducted a retrospective cohort study. We calculated attack rates (AR) and risk ratios (RR) with 95% confidence interval. Variables with p<0.1 at bivariate analysis were entered into a multivariate model and those with p<0.05 in the final model considered independently associated with the AWD.
Results: Vibrio cholera was isolated from seven (10.1%) out of 69 samples. Line listed 139 cases with a median age of 32 years (Range: 20–58 years) included 127 (91.4%) male and 127 (91.4%) guests. Index case was reported on August 31, 2017, cases peaked at 95 cases on September 3, 2017, and declined to three on September 6, 2017. A total of 30 (81.1%) of 37 hotel staff were exposed with 17 (56.7%) cases. Food specific ARs were: steamed spinach 78.6% and pineapples 26.3%. Spinach (RR: 3.0 (95%CI: 1.76-72.97)) was a risk factor while pineapples (RR: 0.4 (95%CI: 0.01-0.58)) was protective.
Conclusion: This was a point source cholera outbreak likely due to eating contaminated spinach. |
| format | Article |
| id | doaj-art-a1bfa91f1ab744d8bc6eecaa7cdb9f2c |
| institution | OA Journals |
| issn | 2664-2824 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | African Field Epidemiology Network |
| record_format | Article |
| series | Journal of Interventional Epidemiology and Public Health |
| spelling | doaj-art-a1bfa91f1ab744d8bc6eecaa7cdb9f2c2025-08-20T01:53:26ZengAfrican Field Epidemiology NetworkJournal of Interventional Epidemiology and Public Health2664-28242022-01-0151https://doi.org/10.37432/jieph.2022.5.1.51Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort studyPhilip Ngere0Elvis Oyugi1Alexis Niyomwungere2Scolastica Wabwire3Adi Dahabo4Daniel Langat5Raphael Muli6Maurice Owiny7Field Epidemiology and Laboratory Training Program, Ministry of Health, Kenya; Department of Disease Surveillance and Epidemic Response, Ministry of Health, KenyaField Epidemiology and Laboratory Training Program, Ministry of Health, KenyaField Epidemiology and Laboratory Training Program, Ministry of Health, KenyaField Epidemiology and Laboratory Training Program, Ministry of Health, KenyaField Epidemiology and Laboratory Training Program, Ministry of Health, KenyaDepartment of Disease Surveillance and Epidemic Response, Ministry of Health, KenyaDepartment of Health Services, County Government of Nairobi, KenyaField Epidemiology and Laboratory Training Program, Ministry of Health, KenyaIntroduction: The Ministry of Health, Kenya (MOH) investigated a report on acute watery diarrhea (AWD) cases at a city hotel to confirm the cause, characterize, and identify associated factors. Methods: A suspected case of cholera was defined as AWD in any person aged >2 years at the hotel from August 31, 2017, to September 6, 2017. We took rectal swabs for laboratory confirmation and summarized the AWD data by person, place, and time. We defined a cohort of hotel staff with those who ate dinner on August 31, 2017, considered exposed and conducted a retrospective cohort study. We calculated attack rates (AR) and risk ratios (RR) with 95% confidence interval. Variables with p<0.1 at bivariate analysis were entered into a multivariate model and those with p<0.05 in the final model considered independently associated with the AWD. Results: Vibrio cholera was isolated from seven (10.1%) out of 69 samples. Line listed 139 cases with a median age of 32 years (Range: 20–58 years) included 127 (91.4%) male and 127 (91.4%) guests. Index case was reported on August 31, 2017, cases peaked at 95 cases on September 3, 2017, and declined to three on September 6, 2017. A total of 30 (81.1%) of 37 hotel staff were exposed with 17 (56.7%) cases. Food specific ARs were: steamed spinach 78.6% and pineapples 26.3%. Spinach (RR: 3.0 (95%CI: 1.76-72.97)) was a risk factor while pineapples (RR: 0.4 (95%CI: 0.01-0.58)) was protective. Conclusion: This was a point source cholera outbreak likely due to eating contaminated spinach.https://www.afenet-journal.net/content/article/5/3/full/acute watery diarrheacholeravibrio choleraekenya |
| spellingShingle | Philip Ngere Elvis Oyugi Alexis Niyomwungere Scolastica Wabwire Adi Dahabo Daniel Langat Raphael Muli Maurice Owiny Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study Journal of Interventional Epidemiology and Public Health acute watery diarrhea cholera vibrio cholerae kenya |
| title | Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study |
| title_full | Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study |
| title_fullStr | Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study |
| title_full_unstemmed | Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study |
| title_short | Cholera outbreak at a city hotel in Kenya, 2017: a retrospective cohort study |
| title_sort | cholera outbreak at a city hotel in kenya 2017 a retrospective cohort study |
| topic | acute watery diarrhea cholera vibrio cholerae kenya |
| url | https://www.afenet-journal.net/content/article/5/3/full/ |
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