Challenge of conducting a placebo-controlled randomized efficacy study for influenza vaccine in a season with low attack rate and a mismatched vaccine B strain: a concrete example

by Jirincova Helena, Havlik Jiří, Havlickova Martina, Kaliskova Eva, Honegr Karel, Wertzova Veronika, Beran Jiří, Van Belle Pascale, Jain Varsha, Innis Bruce, Devaster Jeanne-Marie
Published 2009-01-01