Monday, September 28, 2009

Comparative Efficacy of Inactivated and Live Attenuated Influenza Vaccines

Comparative Efficacy of Inactivated and Live Attenuated Influenza Vaccines: "

ORIGINAL ARTICLE

Comparative Efficacy of Inactivated and Live Attenuated Influenza Vaccines

A.S. Monto and Others


Data are scarce regarding the comparative efficacies of the inactivated (intramuscular administration) and live attenuated (intranasal administration) seasonal influenza vaccines. During the 2007–2008 influenza season, 1952 healthy young adults were enrolled in a randomized, double-blind, placebo-controlled study of these two vaccines. The inactivated vaccine was found to have an absolute efficacy of 68%, whereas the live attenuated vaccine had an absolute efficacy of 36%.


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