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john bursch

steve carmody / Michigan Radio

A judge must now decide if there is enough evidence to send Michigan’s health director to trial on involuntary manslaughter charges. Closing arguments came today in Nick Lyon's preliminary hearing.

Lyon is charged in connection with a Legionnaires' disease outbreak in Genesee County from 2014 to 2015 that killed at least a dozen people. The charges against him are related to two men who died in 2015. 

Lyon and other state health department officials were aware of the outbreak in January 2015. But a public announcement was not made until a year later.