WYOMING (WKZO) -- Bacterial meningitis is being investigated as the cause of death for an eight-year-old Byron Center boy.  Ethan Giang died on February 14, and health officials aren't sure how the boy contracted the fatal illness.  St. John Vianney Principal Gregg Bruno sent a letter to parents on Friday letting them know of the boy's death, adding health officials don't think other students are in danger.