Former Vice President Walter Mondale, 87, is "doing well" and is heading home after a brief hospitalization for influenza, Kelley Luckstein, a spokesperson for the Mayo Clinic, told NBC News on Saturday. During a speech in Minneapolis, Minnesota, on Friday, former President Jimmy Carter said he had spoken to Mondale, his former vice president. "He went there for just a regular physical examination but had a fever, and they finally said that he has influenza," Carter said. Mondale asked him to "tell everybody he is doing well," Carter said. Mondale served as Carter's vice president from 1977 to 1981, as well as a U.S. senator from Minnesota and an ambassador to Japan.