Secondary and Tertiary Transmission of Vaccinia Virus from US Military Service Member. - Young, Gregory E.; Hidalgo, Christina M.; Sullivan-Frohm, Ann; Schulte, Cynthia; Davis, Stephen; Kelly-Cirino, Cassandra; Egan, Christina; Wilkins, Kimberly; Emerson, Ginny L.; Noyes, Kimberly; Blog, Debra (Emerging Infectious Diseases, 2011)