 - To assess immunogenicity in terms of seroprotection rates Diphtheria, Tetanus, Polio types 1, 2 and 3 and seroconversionvaccine response rates to acellular Pertussis antigens Pertussis toxoid PT, Filamentous Haemagglutinin FHA of sanofi pasteurs DTacP-IPV TetraximTM vaccine, one month after the booster dose given at 4 to 6 years of age. 