Robert Terwilliger, right, of Williamsburg, Pa., who is participating in a Lyme disease vaccine trial at the Altoona Center for Clinical Research, is injected with either the new vaccine or a placebo, by registered nurse Janae Roland, Friday, Aug. 5, 2022, in Duncansville, Pa. Lyme is a growing problem, with cases steadily rising and warming weather helping ticks expand their habitat. (AP Photo/Gary M. Baranec)