PITTSBURGH (AP) - The nation's biggest known outbreak of hepatitis A is causing such a panic that people are lining up by the thousands for antibody shots and no longer eating out.
A third person died Friday and nearly 500 others who ate at a Chi-Chi's Mexican restaurant have fallen ill in the outbreak that has prompted the Centers for Disease Control and Prevention to send assistance.
Health investigators are focusing on whether contaminated produce - perhaps scallions - caused the outbreak at the restaurant in the Beaver Valley Mall, about 25 miles northwest of Pittsburgh.
``We're very concerned. It's very serious and we've sent a team of people out there to assist,'' said CDC spokesman David Daigle.