| plague in brazil during two years of bacteriological and serological surveillance. | in north-east brazil, where plague infection is endemic, bacteriological and serological methods were employed during a two-year period to determine accurately the occurrence of human infection and to define certain epidemiological features of both human and rodent infection. there were 67 confirmed cases of plague, predominantly among males and children. most of these cases occurred in two inland rural plateaux of ceara state. clustering of cases in place and time was common, as was a history o ... | 1981 | 6976228 |