Two new glycoconjugate vaccines protecting against invasive diseases caused by 13 pneumococcal serotypes or 4 meningococcal serogroups will soon be available in Switzerland. They offer real new perspectives for young children, and for high-risk group adults. As their development is recent, the data one may wish to have is not yet fully available for each age and disease categories. This article attempts to delineate the interest of these new glycoconjugate vaccines and their limits. The additional information (and the answers to numerous expected questions) will be distributed to the 4300 subscribers of InfoVac (www.infovac. ch), which just celebrated its 10th birthday.