<p>State officials are investigating whether additional Beaver County restaurants may be involved in the growing hepatitis A outbreak and are urging restaurants in three counties to beef up sanitation efforts and report any workers ill with flu-like symptoms.</p>
<p>The number of people confirmed to have contracted hepatitis A after visiting or working at the Chi-Chi's Mexican Restaurant in the Beaver Valley Mall rose to 130 Thursday. Four of the victims are employees, according to the state health department.</p>