Journal
VACCINE
Volume 21, Issue 17-18, Pages 2133-2144Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0264-410X(02)00748-X
Keywords
influenza virus; influenza vaccine; efficacy
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We assessed whether trivalent live, cold-adapted influenza virus (CAIV-T) vaccine provides added protection when co-administered with trivalent inactivated influenza virus vaccine (TVV) in patients with chronic obstructive pulmonary disease (COPD). Subjects (N = 2215) were randomly assigned to receive either TVV intramuscularly (IM) and CAIV-T intranasally (TC), or TVV and placebo (TP). The vaccines were well-tolerated. Efficacy of TC compared to TP was not statistically significant and was 0.16 for any influenza virus strain (95% confidence limit (CL): -0.22, 0.43), 0.26 for A (H3N2) virus (95% CL: -0.17, 0.53), and -0.05 for type B virus (95% CL: -1.13, 0.48). However, there was a possible advantage for TC over TP in reducing respiratory consequences of an influenza season measured by pulmonary function and symptoms at end of study. Published by Elsevier Science Ltd.
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