The realities of biodefense vaccines against Rickettsia.

The realities of biodefense vaccines against Rickettsia.
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DOI:
10.1016/j.vaccine.2009.07.045
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发表时间:
2009-11-05
期刊:
影响因子:
5.5
通讯作者:
Walker DH
Walker DH
中科院分区:
医学3区
文献类型:
--
作者:
Walker DH

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普瓦泽基立克次体、立克次氏立克次体、康氏立克次体和伤寒立克次体是严重的生物武器威胁,因为低剂量气溶胶的高传染性、稳定的小颗粒气溶胶传染性、引起严重疾病的毒力、难以及时诊断、常规经验性治疗无效、工程化完全抗菌药物耐药性的潜力、较低水平的免疫力、自然界中制剂的可用性以及繁殖、稳定和传播的可行性。感染诱导长期免疫,立克次体灭活疫苗激发不完全保护,减毒活突变体激发强免疫力但又恢复毒力,合理开发安全、有效的减毒活疫苗前景广阔。
Rickettsia prowazekii, R. rickettsii, R. conorii, and R. typhi are serious biologic weapon threats because of high infectivity of low dose aerosols, stable small particle aerosol infectivity, virulence causing severe disease, difficulty in establishing a timely diagnosis, ineffectiveness of usual empiric treatments, potential for engineered complete antimicrobial resistance, lower level of immunity, availability of the agents in nature, and feasibility of propagation, stabilization, and dispersal. Infection induces long-term immunity, killed rickettsial vaccines stimulate incomplete protection, and a live attenuated mutant stimulates strong immunity but reverts to virulence, Prospects for rational development of a safe, effective live attenuated vaccine are excellent.
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