Investigating suspected gastrointestinal anthrax: a case-control study in Cayapa village, Abra province, Philippines, March 2017.
| Autor: | Lonogan KB; Field Epidemiology Training Program, Department of Health Center for Health Development - Cordillera Administrative Region, Baguio City, Benguet, Philippines., De Guzman A; Department of Health, Manila, Philippines., de Los Reyes VC; Department of Health, Manila, Philippines., Sucaldito MN; Department of Health, Manila, Philippines., Avelino F; Department of Health, Manila, Philippines. |
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| Jazyk: | angličtina |
| Zdroj: | Western Pacific surveillance and response journal : WPSAR [Western Pac Surveill Response J] 2024 Oct 20; Vol. 15 (4), pp. 1-6. Date of Electronic Publication: 2024 Oct 20 (Print Publication: 2024). |
| DOI: | 10.5365/wpsar.2024.15.1067 |
| Abstrakt: | Objective: Due to rising cases of foodborne illness in Cayapa village, Abra province, Philippines, a team was dispatched on 21 March 2017 to conduct an epidemiological investigation. The objectives were to confirm the diagnosis, determine the existence of an outbreak, identify risk factors and recommend prevention and control measures. Methods: A 1:2 case-control study was conducted. We defined a suspected case as a previously well village resident who developed abdominal pain or diarrhoea, and one or more symptoms of fever, vomiting, sore throat, difficulty swallowing or lymphadenopathy between 27 February and 14 March 2017. Confirmed cases were suspected cases who tested positive for Bacillus anthracis through bacterial culture or rt-PCR. Serum and soil samples were collected for testing, and an environmental survey and key informant interviews were conducted. Stata version 13 was used for data analysis. Results: The epidemic curve indicated a point source outbreak for the 29 cases identified. Common signs and symptoms were abdominal pain (26, 90%), fever (16, 55%) and diarrhoea (14, 48%). One case presented with lymphadenopathy. Interviews revealed that a dead carabao had been butchered and sold to the villagers. The 11 serum specimens and five soil samples tested were negative for B. anthracis . After multivariable analysis, consumption of the uncooked meat of the carabao was significantly associated with being a case (adjusted odds ratio: 6, 95% CI: 1.7-18.4). Discussion: This outbreak was most likely associated with the consumption of the carcass of a dead carabao. Educating such farming communities on preventive measures for zoonotic diseases is recommended. Competing Interests: The authors have no conflicts of interest to declare. ((c) 2024 The authors; licensee World Health Organization.) |
| Databáze: | MEDLINE |
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