sierra leone | 0.48 |
nigeria | 0.48 |
occur in west africa | 0.46 |
present like other dise… | 0.44 |
indicate serious impact… | 0.28 |
occur in sex | 0.25 |
observable symptoms | 0.28 |
endemic | 0.59 |
mild | 0.38 |
asymptomatic | 0.20 |
transmitted to human | 0.56 |
caused by the lassa vir… | 0.43 |
associated with occasio… | 0.40 |
contacted | 0.38 |
diagnosed | 0.32 |
discovered in 1969 | 0.30 |
prevented | 0.29 |