A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017
INTRODUCTION: On 19 March 2017, an outbreak of unknown etiology was reported among students at a college in Lusaka, Zambia. We investigated to confirm the outbreak, identify exposures, determine the aetiological agent, and implement preventive measures. METHODS: we conducted an unmatched case-contro...
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| Format: | Article |
| Language: | English |
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The Pan African Medical Journal
2018-02-01
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| Series: | The Pan African Medical Journal |
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https://www.panafrican-med-journal.com/content/article/29/100/pdf/100.pdf
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| _version_ | 1819002113251868672 |
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| author | Fred Kapaya Francis Dien Mwansa Patrick Sakubita Angela Gama Nelia Langa Orbrie Chewe Lwito Mutale Francis Nanzaluka Chongwe Gershom Mumbi Chola Nathan Kapata Nyambe Sinyange Sylvia Chibuye Ellen Yard |
| author_facet | Fred Kapaya Francis Dien Mwansa Patrick Sakubita Angela Gama Nelia Langa Orbrie Chewe Lwito Mutale Francis Nanzaluka Chongwe Gershom Mumbi Chola Nathan Kapata Nyambe Sinyange Sylvia Chibuye Ellen Yard |
| author_sort | Fred Kapaya |
| collection | DOAJ |
| description | INTRODUCTION: On 19 March 2017, an outbreak of unknown etiology was reported among students at a college in Lusaka, Zambia. We investigated to confirm the outbreak, identify exposures, determine the aetiological agent, and implement preventive measures. METHODS: we conducted an unmatched case-control study. Cases and controls were selected conveniently. A suspected case was diarrhea or abdominal pains in any student at College A and Controls were asymptomatic students at College A during 18-23 March. We interviewed cases and controls about exposures to suspected food and water and collected saved food samples and swabs from food-handlers' hands and kitchen surfaces for culture. We analyzed data using Epi-info v 7.2 (Atlanta, Georgia). RESULTS: we identified 59 suspected case-patients. Predominant symptoms were diarrhea (n = 51.83%) and abdominal pains (n = 44.75%). The outbreak started on 18 March, peaked on 19, and concluded on 20 March. We interviewed 30 case-patients and 71 controls. Exposures associated with increased odds of illness included eating food served at dinner on Saturday (18 March) in school cafeteria (OR = 5.8, 95% CI = 2.0-16.7); specifically, eating beans at Saturday dinner (OR = 21.6, 95% CI = 4.5-104) and drinking water supplied at school (OR = 8.8, 95% CI = 1.45-53.6). Samples from all food-handlers (n = 13) yielded Staphylococcus aureus and all food samples (n = 3) yielded Escherichia coli, Staphylococcus aureus and fecal coliforms. CONCLUSION: the results suggest a foodborne outbreak caused by consumption of contaminated food served at dinner on 18 March at College A. We educated the food handlers and school management about the importance of disinfection of preparation surfaces, supervision of food handling and handwashing practices. |
| first_indexed | 2024-12-20T22:59:56Z |
| format | Article |
| id | doaj.art-5a0171efc7d44832b88f6125679a2326 |
| institution | Directory Open Access Journal |
| issn | 1937-8688 1937-8688 |
| language | English |
| last_indexed | 2024-12-20T22:59:56Z |
| publishDate | 2018-02-01 |
| publisher | The Pan African Medical Journal |
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| series | The Pan African Medical Journal |
| spelling | doaj.art-5a0171efc7d44832b88f6125679a23262022-12-21T19:24:01ZengThe Pan African Medical JournalThe Pan African Medical Journal1937-86881937-86882018-02-012910010.11604/pamj.2018.29.100.1473714737A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017Fred Kapaya0Francis Dien Mwansa1Patrick Sakubita2Angela Gama3Nelia Langa4Orbrie Chewe5Lwito Mutale6Francis Nanzaluka7Chongwe Gershom8Mumbi Chola9Nathan Kapata10Nyambe Sinyange11Sylvia Chibuye12Ellen Yard13 Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia University of Zambia, School of Public Health, Lusaka, Zambia University of Zambia, School of Public Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia Ministry of Health, Lusaka, Zambia U.S. Centers for Disease Control and Prevention, Lusaka Zambia INTRODUCTION: On 19 March 2017, an outbreak of unknown etiology was reported among students at a college in Lusaka, Zambia. We investigated to confirm the outbreak, identify exposures, determine the aetiological agent, and implement preventive measures. METHODS: we conducted an unmatched case-control study. Cases and controls were selected conveniently. A suspected case was diarrhea or abdominal pains in any student at College A and Controls were asymptomatic students at College A during 18-23 March. We interviewed cases and controls about exposures to suspected food and water and collected saved food samples and swabs from food-handlers' hands and kitchen surfaces for culture. We analyzed data using Epi-info v 7.2 (Atlanta, Georgia). RESULTS: we identified 59 suspected case-patients. Predominant symptoms were diarrhea (n = 51.83%) and abdominal pains (n = 44.75%). The outbreak started on 18 March, peaked on 19, and concluded on 20 March. We interviewed 30 case-patients and 71 controls. Exposures associated with increased odds of illness included eating food served at dinner on Saturday (18 March) in school cafeteria (OR = 5.8, 95% CI = 2.0-16.7); specifically, eating beans at Saturday dinner (OR = 21.6, 95% CI = 4.5-104) and drinking water supplied at school (OR = 8.8, 95% CI = 1.45-53.6). Samples from all food-handlers (n = 13) yielded Staphylococcus aureus and all food samples (n = 3) yielded Escherichia coli, Staphylococcus aureus and fecal coliforms. CONCLUSION: the results suggest a foodborne outbreak caused by consumption of contaminated food served at dinner on 18 March at College A. We educated the food handlers and school management about the importance of disinfection of preparation surfaces, supervision of food handling and handwashing practices. https://www.panafrican-med-journal.com/content/article/29/100/pdf/100.pdf foodborne illnesscase-control studyzambiafield epidemiology training program |
| spellingShingle | Fred Kapaya Francis Dien Mwansa Patrick Sakubita Angela Gama Nelia Langa Orbrie Chewe Lwito Mutale Francis Nanzaluka Chongwe Gershom Mumbi Chola Nathan Kapata Nyambe Sinyange Sylvia Chibuye Ellen Yard A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 The Pan African Medical Journal foodborne illness case-control study zambia field epidemiology training program |
| title | A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 |
| title_full | A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 |
| title_fullStr | A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 |
| title_full_unstemmed | A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 |
| title_short | A foodborne disease outbreak investigation experience in a College in Lusaka, Zambia, 2017 |
| title_sort | foodborne disease outbreak investigation experience in a college in lusaka zambia 2017 |
| topic | foodborne illness case-control study zambia field epidemiology training program |
| url |
https://www.panafrican-med-journal.com/content/article/29/100/pdf/100.pdf
|
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