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Lassa fever (LF) remains endemic in Nigeria with the country reporting the highest incidence and mortality globally. Recent national data suggests increasing incidence and expanding geographic spread. Predictors of LF case positivity in Nigeria have been sparsely studied. We thus sought to determine the sociodemographic and clinical determinants of LF positivity amongst suspected cases presenting to health facilities from 2018 to 2021. A secondary analysis of the national LF surveillance data between January 2018 and December 2021. Socio-demographic and clinical data of 20,027 suspected LF cases were analysed using frequencies and Chi-square statistics with significant p-value set at p 

Original publication





Scientific reports

Publication Date





Department of Prevention Programmes and Knowledge Management, Nigeria Centre for Disease Control, Abuja, Nigeria.


Humans, Lassa Fever, Multivariate Analysis, Logistic Models, Adult, Middle Aged, Health Facilities, Nigeria, Female, Male