image: This photo shows an electron micrograph of rotavirus. This image relates to an article that appeared in the July 17, 2009, issue of Science, published by AAAS. The study, by Dr. V.E. Pitzer of the Pennsylvania State University in State College, Pa., and colleagues, was titled, "Demographic Variability, Vaccination, and the Spatiotemporal Dynamics of Rotavirus Epidemics." view more
Credit: Image courtesy of Charles Humphrey, CDC