In the Pennsylvania hepatitis A outbreak, PDOH
was able to demonstrate that there had been a defective product (i.e., food contaminated with hepatitis A) and that the agency's costs had flowed naturally from its response to the resulting outbreak.
Within 2 months of the accident, the PDoH developed and implemented a TMI Population Registry to track possible health effects to the local population (9).
An initial mortality follow-up study by the PDoH examined mortality from 1979 to 1985 (6).
To further assess the effects of the accident, the University of Pittsburgh (Pittsburgh, PA), in collaboration with the PDoH, is continuing a mortality follow-up through the year 1999.
Observed (Obs) and [SMR.sub.c] (SMR based on corresponding county rates) for specific causes of death, PDoH TMI cohort, 1979-1992 for Pennsylvania three-county comparison, white males and females.
SMRs for breast cancer,(a) PDoH TMI cohort, white females,(b) 1979-1992.