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Biometrics. 2009 Dec;65(4):1223-32. doi: 10.1111/j.1541-0420.2009.01189.x.

Assessing vaccine effects in repeated low-dose challenge experiments.

Author information

1
Department of Biostatistics, University of North Carolina, Chapel Hill, North Carolina 27599, USA. mhudgens@bios.unc.edu

Abstract

Evaluation of HIV vaccine candidates in nonhuman primates (NHPs) is a critical step toward developing a successful vaccine to control the HIV pandemic. Historically, HIV vaccine regimens have been tested in NHPs by administering a single high dose of the challenge virus. More recently, evaluation of candidate HIV vaccines has entailed repeated low-dose challenges, which more closely mimic typical exposure in natural transmission settings. In this article, we consider evaluation of the type and magnitude of vaccine efficacy from such experiments. Based on the principal stratification framework, we also address evaluation of potential immunological surrogate endpoints for infection.

PMID:
19397589
PMCID:
PMC2794923
DOI:
10.1111/j.1541-0420.2009.01189.x
[Indexed for MEDLINE]
Free PMC Article
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