[Vaccination against seasonal influenza in France in 2010 and 2011: decrease of coverage rates and associated factors].
OBJECTIVE
To measure the seasonal influenza vaccination coverage rate (VCR) in France in 2010, one year after the A(H1N1) influenza pandemic, and 2011 by age and target disease and to identify risk factors associated with a lack of vaccination in 2010 for those previously vaccinated in 2009.


METHODS
At the beginning of each vaccination campaign, the National Health Insurance, covering 86% of the French population, sends free influenza vaccination vouchers to at-risk beneficiaries aged under 65 suffering from diverse target diseases and to all individuals aged 65 and over (around 11.5 million).


RESULTS
The global VCR (50.4%), except people with asthma identified by drug refunds, decreased in 2010 compared with the previous three years when it was close to 60% (51.0% in 2011). For people under 65 years old, it fell from 40.3% in 2009 to 31.6% in 2010 (33.1% in 2011) and those aged 65 years and over from 63.3% to 53.8% (54.0% in 2011). The VCR of each target disease also decreased, especially for asthma, but not for HIV infection with campaign modification in 2010. It decreased among those aged 65 years and over with target disease (72.3% in 2009, 60.4% in 2010, 60.7% in 2011). Vaccination lack in 2010 was found to be associated with younger age, low number of drug deliveries and consultations with a general practitioner or a specialist, hospitalisation and the residence in a region of South of France or in overseas regions.


CONCLUSIONS
An important decline of the VCR was observed in France since 2010 while the recommended VCR is 75%. Efforts must be led to improve the confidence of the insurant, especially towards the most fragile groups.
Caisse nationale d'assurance maladie des travailleurs salariés, 75986 Paris cedex 20, France. philippe.tuppin@cnamts.fr
Philippe
P
Tuppin
Stéphanie
S
Choukroun
Solène
S
Samson
Alain
A
Weill
Philippe
P
Ricordeau
Hubert
H
Allemand
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D000368:Aged; D001249:Asthma / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D005602:France / Q000453:epidemiology; D006801:Humans; D007223:Infant; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology*; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology; D012621:Seasons; D014611:Vaccination / Q000706:statistics & numerical data*; D055815:Young Adult
D007252:Influenza Vaccines