Malaria Outbreak Investigation in Workaye Kebele, North West Ethiopia, 2016, Case-control

  • Vector-borne
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Background:Malaria remains a life-threatening public health problem globally. In 2015, over 95 countries had ongoing malaria transmission, half of world’s population are at risk of malaria. Ethiopia is among countries with unstable malaria transmission. Consequently, malaria epidemics are serious public health emergencies. We described magnitude of morbidity, investigate associated factors and implement interventions in Workaye Kebele.
Methods: Unmatched case-control study with 54 patients and 108 controls was conducted in Workaye Kebele (June 09-20/2016). We reviewed previous year’s malaria data to establish threshold. Cases were those having malaria sign and symptom with laboratory confirmation and controls with no malaria signs and symptoms in 1:2 ratio. Data collected by face to face interview through semi-structured questionnaires and analyzed using SPSS20.
Results: 227 malaria patients were detected including 54 cases during investigation period, 52% were females with attack rate 32 per 1000 population. Tig mender Gote (27 per 100 population) was most affected. Age group <5 years (103 per 1000 population) were most affected. Using long lasting insecticidal net (LLIN), having awareness of malaria transmission and prevention and environmental control were protective factors of malaria outbreak with (AOR=0.17, 95%CI=0.06-0.52), (AOR=0.24, 95%CI=0.09-0.65) and (AOR=0.1, 95%CI=0.03-0.34) respectively. Artificial water bodies and intermittent rivers were risk factors of malaria outbreak with (AOR=3.32, 95%CI=1.18-9.34), and (AOR=4.7, 95%CI=1.6-13.65) respectively.
Conclusion: Artificial water bodies, intermittent rivers, poor utilization of LLIN, Poor awareness on malaria transmission and prevention were attributed for outbreak and recommended utilization of LLIN, creating awareness for malaria prevention and environmental control of water bodies.

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