Full Length Research Paper
This study seeks to assess the epidemiological features of a GIS supported investigation of a cholera outbreak in Abeokuta. Abeokuta, the capital city of Ogun State, Southwestern Nigeria with an area of 1256 km2 and a population of 605, 451 people had an outbreak of cholera from 20th November, 2005 to 1st of January, 2006. The outbreak affected the Abeokuta North Local Government area where the municipal waterworks is located. Municipal water consumption was found to be associated with illness [McNemar’s Chi square (X2 = 20.5; p < 0.001) and Odds ratio 10]. The epidemiological surveillance data showed a total of one hundred and fifteen cases and 11 deaths with case fatality rate of 9.6%. Male specific and female specific case fatality rates were 11.9 and 7.1%, respectively. The age group of 15 years and above accounted for 68.3% of the cases and 90.9% of the deaths. Post epidemic environmental investigation showed progressive contamination along distribution points. Cholera is still a major cause of morbidity and mortality among youth and ageing population in Nigeria.
Key words: Cholera, epidemiological studies, outbreak investigation, Vibrio cholerae, Abeokuta, Nigeria.
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