MADISON, Wis. (AP) — Wisconsin health officials are defending their investigation of a blood infection discovered in the state. The Division of Public Health responded Tuesday to Assembly Democrats who questioned last week why state health officials delayed telling people that Elizabethkingia was spreading in the state. The Wisconsin Department of Health Services began investigating the outbreak in December. The agency told hospitals to be on the lookout for infections in January but didn’t announce it to the public until March. State Health Officer Karen McKeown says disease detectives have been working aggressively to locate the source of the outbreak. McKeown says health officials are working to provide accurate information and prevent the spread of misleading information. Sixty adult cases of the bacteria have been confirmed. No confirmed cases have been found in children.