Lassa fever has an incubation period of 15-20 days. The initial symptoms are flu-like, but in the late stage of the disease patients die a miserable and tragic death from swelling in the larynx and blood pouring out from facial orifices.
拉薩熱潛伏期為 15 至 20 天，初期症狀和感冒很類似，但病人到了末期，會咽喉腫脹、七孔出血，死相淒慘。