– An outbreak of norovirus at a southwestern Louisiana casino has left at least 200 people sick and has prompted an investigation by state health officials. The Department of Health confirmed Thursday that the illnesses reported at L’Auberge Casino in Lake Charles last weekend were norovirus-related, news outlets reported. She said the agency has received at least 200 surveys from people self-reporting virus symptoms. It's unclear how the virus initially spread, but Cavanaugh said that doesn't matter at this point. The Department of Health said anyone who has become ill with any of the norovirus symptoms should complete a survey online.