| an outbreak of poliomyelitis in andhra pradesh (south india). | an outbreak of poliomyelitis that occurred in the year 1992 in telangana region of andhra pradesh, south india was investigated to understand the reasons for persistence of poliomyelitis in the general population and for the outbreak in andhra pradesh in particular. the study comprised of a detailed investigation of epidemiological and clinical features, serology and vaccination status and a case control study to calculate vaccine efficacy by matched pair analysis. the outbreak occurred after a ... | 1994 | 7875884 |