JEFFERSON CITY, Missouri, Aug. 20 -- The Missouri Department of Health and Senior Services issued the following news release: Michelle Yarnall, administrator of Pediatric Associates of Southwest Missouri in Joplin has been named Missouri's Immunization Champion for her outstanding efforts to promote immunizations. Nominated by the Bureau of Immunizations within the Missouri Department of Health and Senior Services (DHSS), Yarnall is recognized for initiating an innovative plan to continue serv  more