Assertion: lassa fever | /r/Causes | outbreak
Facets:
Source sentences:
text: Lassa fever is endemic in Nigeria and causes outbreaks almost every year in different parts of the country, with yearly peaks observed between December and February.
text: Lassa fever causes outbreaks almost every year in different parts of Liberia and West Africa.
text: Lassa fever is endemic in neighbouring Nigeria and other West African countries and causes outbreaks almost every year in different parts of the region, with yearly peaks observed between December and February.
text: Lassa fever is endemic in Liberia and causes outbreaks almost every year in different parts of the country.