Gergely Gulyás, Head of the Prime Minister's Office, has announced that from Feb. 15, a booster jab will be needed for a vaccination certificate to be valid. The minister said a certificate will also be valid if a second dose was administered within six months prior. For those below the age of 18, two jabs will suffice to obtain a certificate. Omicron was a game-changer, he said. “It’s the vaccine that ensures protection rather than having recovered from the disease.” Taking the booster jab, available for adults from four months after the second dose, will be required for a valid vaccination certificate, he said, adding that the current cards displaying a QR code would not have to be replaced.