The virus can live on surfaces for up to 8 hours at room temperature. Sometimes people become infected by touching objects with the flu virus on it, then touching their mouth or nose. You cannot become infected by receiving the flu vaccine. What are the symptoms of flu? Buy vaccines directly from Merck. Find vaccine information and resources for children, adolescents, and adults. You are about to leave MerckVaccines.com ... Smartphone App: Vaccines on the Go - What You Should Know : Provides all parents with reliable information about the science, safety, and importance of vaccines and the diseases they prevent. From The Vaccine Education Center at The Children's Hospital of Philadelphia, the app is available for Android and Apple devices.