If children between the ages of 12 and 18 are vaccinated, the coronavirus will be more easily controlled this winter without other measures. That is what the RIVM has calculated. We looked at models that show the effect of vaccinating that group on the reproduction number from September. “If all goes well, the reproduction number can be just under 1, RIVM modeler Jacco Wallinga tells the US. He is talking about the situation that only adults are vaccinated. If children also receive a vaccine, the reproduction number will probably be around 0.85.