| seroepidemiologic studies of acute hemorrhagic conjunctivitis virus (enterovirus type 70) in west africa. i. studies with human sera from ghana collected eight years after the first outbreak. | in 1969 and early 1970, during the pre-epidemic period of acute hemorrhagic conjunctivitis (ahc) in the upper north regions of ghana, 191 human sera were collected. in 1977, eight years after the first epidemic of ahc in ghana, 1008 human sera were also collected in various regions of ghana. these sera were examined for virus neutralizing (vn) antibody against the j670/71 strain of enterovirus type 70 (ev70). in the pre-epidemic 1969-1970 sera, a low prevalence rate (6%) of vn antibody, with a t ... | 1981 | 7304562 |