| serologic survey of spotted fever group rickettsiosis on hainan island of china. | a serosurvey for antibodies to rickettsia japonica was conducted on hainan island of china. serum specimens were collected from 1,030 outpatients at hospitals in different parts of the island regardless of their diagnosis. only two among 538 serum specimens collected in baoting and tongshi counties, located in the southern part of the island, were demonstrated to contain antibodies reactive with r. japonica at a high dilution. the specimens also reacted with r. rickettsii at the same titer as wi ... | 1991 | 1808466 |