| an outbreak of foodborne hepatitis a: the value of serologic testing and matched case-control analysis. | in april 1981, an outbreak of hepatitis a occurred among state legislators in tennessee. although the number of cases was small, we traced the source to a food handler who served cold meats and cheese. this investigation demonstrates the value of rapid serologic testing using a radioimmunoassay technique and matched case-control analysis to identify small foodborne outbreaks of hepatitis a. | 1983 | 6311035 |