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Nebulized live-attenuated influenza vaccine provides protection in ferrets at a reduced dose

机译:雾化的减毒活流感疫苗可降低白鼬的剂量

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Live-attenuated influenza vaccine (LAIV) is delivered to vaccine recipients using a nasal spray syringe. LAIV delivered by this method is immunogenic at current doses; however, improvements in nasal delivery might allow for significant dose reduction. We investigated LAIV vaccination in ferrets using a high efficiency nebulizer designed for nasal delivery. LAIV nasal aerosol elicited high levels of serum neutralizing antibodies and protected ferrets from homologous virus challenge at conventional (10(7) TCID50) and significantly reduced (10(3) TCID50) doses. Aerosol LAIV also provided a significant level of subtype-specific cross-protection. These results demonstrate the dose-sparing potential of nebulizer-based nasal aerosol LAIV delivery. (C) 2011 Elsevier Ltd. All rights reserved.
机译:使用鼻喷雾器将减毒活流感疫苗(LAIV)输送给疫苗接受者。通过这种方法递送的LAIV在当前剂量下具有免疫原性。但是,鼻腔给药的改善可能会减少剂量。我们使用设计用于鼻腔输送的高效雾化器调查了雪貂的LAIV疫苗接种情况。在常规(10(7)TCID50)剂量下,LAIV鼻气雾剂可引起高水平的血清中和抗体并保护雪貂免受同源病毒攻击,并显着降低剂量(10(3)TCID50)。气溶胶LAIV还提供了显着水平的亚型特异性交叉保护。这些结果证明了基于雾化器的鼻用气雾剂LAIV递送的节省剂量的潜力。 (C)2011 Elsevier Ltd.保留所有权利。

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