| clinical observations in 42 patients with lassa fever. | under continuous observation of several months, 42 patients from the eastern province of sierra leone, liberia (lofa county), and neighbouring guinea were identified as lassa fever cases by indirect immunofluorescent antibody technique, indicating that the disease is endemic in these areas. the clinical course varied from mild disease to severe illness with haemorrhagic disorders. the fatality rate was 14%. the occurrence of only two possible secondary cases suggests that person-to-person spread ... | 1980 | 7233535 |