| prevalence and determinants of hepatitis a virus exposure among prison entrants in queensland, australia: implications for public health control. | in september 1997, a multicentre outbreak of hepatitis a virus (hav) infection occurred in the queensland prison system following a prolonged community-based hav epidemic among illicit drug users. as part of the public health response, a cross-sectional survey was undertaken to estimate the sero-prevalence of, and identify the determinants for, recent and past hav infection among the incoming male prisoner population. exposure data were collected through face-to-face interviews with 214 consenti ... | 1998 | 9751015 |