Influenza Vaccination Coverage and Vaccine Efficacy One Year After the A(H1N1) Influenza Pandemic, January 2011

The objective of this national survey conducted by the InVS was to assess the potential impact of controversies surrounding the 2009 pandemic vaccine campaign on seasonal vaccine coverage during the following season. Data were collected in January 2011 through a telephone survey that included a sample of approximately 1,000 people reached by telephone. Vaccination coverage rates measured in the target groups were 61% among people aged 65 and older, 46.6% among people under 65 with an underlying condition targeted by the flu vaccine, and 27.6% among healthcare professionals. These coverage rates were not significantly lower compared to those of the seasonal vaccine during the previous flu season. The efficacy of the trivalent vaccine against severe cases of influenza was 72% among those aged 65 and older and 80% among those under 65 with an underlying condition. This survey showed that although vaccination coverage remained below the 75% target in each target group, there appeared to be no impact of the controversies surrounding the 2009–2010 pandemic vaccination campaign on seasonal vaccine coverage in 2010–2011.

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• Guthmann JP, Fonteneau L, Bonmarin I, Lévy-Bruhl D. Influenza vaccination coverage one year after the A(H1N1) influenza pandemic, France, 2010–2011. Vaccine 2012,30:995–997.