Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: A Phase 1 Study of the Safety and Immunogenicity of the Recombinant Live-Attenuated Chimeric Bovine/Human Parainfluenza Type 3 Virus Vaccine, rB/HPIV3, Lot PIV3 #101A, Del
Brief Summary: Human parainfluenza viruses (HPIVs) are a major health concern in infants and young children under 5 years of age, causing serious respiratory tract disease. The purpose of this study is to test the safety of and immune response to a new HPIV vaccine in healthy infants, children, and adults.