PIERRE, S.D. (MITCHELLNOW) South Dakota is reporting a major drop in syphilis cases.  The Department of Health says total cases are down 41% from last year. Health Secretary Melissa Magstadt credits targeted outreach, testing, and partnerships with tribal nations and correctional facilities. While the decline is a big step forward, officials say work continues to reach high-risk groups, including Native American communities and those with a history of substance use or incarceration.