U.S. Health and Human Services Secretary Kathleen Sebelius and U.S. Rep. Wm. "Lacy"Clay, (D-MO), talk with H1N1 clinical trial subjects Erin Shannon-McGowan (L) and her 2-year-old daughter Lochlan McGowan, while touring Saint Louis University's Center for Vaccine Development where work on the H1N1 flu vaccine is being conducted in St. Louis on October 6, 2009. UPI /Jeff Roberson/POOL