Madison restaurant reopens after investigation into food-borne illness

La Hacienda, a 23-year old Mexican restaurant at 515 Park St., reopened Tuesday, May 14 after being closed for four days while public health officials investigated a possible food-borne outbreak that was thought to have caused about 25 customers to get sick.

Officials determined the cause of the illnesses was norovirus, a very contagious disease spread through contaminated food or water, according to a Wisconsin State Journal story.