Bloch A
Bull World Health Organ. 1978;56(5):811-3.
A serological survey was undertaken at four Liberian hospitals in 1974 in which serum samples were taken from 104 health workers and 61 patients. Six persons had Lassa fever antibodies: four midwives and two students of midwifery. Of those persons who had lived in Loffa County, 4 of 22 midwives were seropositive whereas none of the other 39 residents were positive (P = 0.014).
1974年在利比里亚的四家医院进行了一项血清学调查，从104名医护人员和61名患者身上采集了血清样本。有6人存在拉沙热抗体：4名助产士和2名助产专业学生。在曾居住在洛法县的人员中，22名助产士中有4人血清呈阳性，而其他39名居民中无人呈阳性（P = 0.014）。
