Journal
COMPARATIVE IMMUNOLOGY MICROBIOLOGY AND INFECTIOUS DISEASES
Volume 31, Issue 2-3, Pages 191-225Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cimid.2007.07.008
Keywords
vaccine; respiratory syncytial virus; RSV
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Human (HRSV) and bovine (BRSV) respiratory syncytial viruses (RSV) are two closely related viruses, which are the most important causative agents of respiratory tract infections of young children and calves, respectively. BRSV vaccines have been available for nearly 2 decades. They probably have reduced the prevalence of RSV infection but their efficacy needs improvement. In contrast, despite decades of research, there is no currently licensed vaccine for the prevention of HRSV disease. Development of a HRSV vaccine for infants has been hindered by the lack of a relevant animal model that develops disease, the need to immunize immunologically immature young infants, the difficulty for live vaccines to find the right balance between attenuation and immunogenicity , and the risk of vaccine-associated disease. During the Past 15 years, intensive research into I HRSV vaccine has yielded vaccine candidates, which have been evaluated in animal models and, for some of them, in clinical trials in humans. Recent formulations have focused On Subunit vaccines with specific CD4+ Th-1 immune response-activating adjuvants and on genctically engineered live attenuated vaccines. It is likely that different HRSV vaccines and/or combinations of vaccines used sequentially will be needed for the various Populations at risk. This review discusses the recent advances in RSV vaccine development. (c) 2007 Elsevier Ltd. All rights reserved.
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