The Santa Clara County Public Health Department on Monday reported an additional 41 people sick with Shigella, bringing the total to 182.

A majority of the sick ate food last weekend from Marisco’s #3 Mexican Sea Food restaurant, located at 205 N. 4th Street in San Jose and public health officials say they expect to see more secondary cases, in which people had contact with someone who ate the restaurant.

Shigella is extremely contagious and causes severe fever, diarrhea and stomach pain and can be spread quickly to others. County health officials say people with diarrhea must not work, especially food service workers, healthcare providers and childcare workers. Symptoms can take as long as a week to appear, but most often begin one to four days after infection.

County health experts say thorough and frequent hand washing is extremely important in preventing the continued spread of the outbreak.