JEFFERSON CITY, MO (KMOX) - Missouri health officials say they are still trying to determine what made up to 50 people attending a convention in Jefferson City sick late last week.

It was a meeting of the Missouri Coroners and Medical Examiners Association at the Truman Hotel and Convention Center. Up to 50 of the 120 people attending the meeting fell ill, complaining of a dry throat, cough, and flu-like symptoms, including a high fever.

“There were five individuals that did go to the ER that we’re aware of,” Missouri Health Department spokeswoman Gena Terlizzi said. “One of them did have to be hospitalized and all the individuals who reported being sick, two of them have tested positive for Influenza A.”

Terlizzi said of the tests they have received so far, no one has tested positive for Legionnaire’s disease which is a severe bacterial infection of the respiratory tract.