New vaccination certificates are issued with for people who had primary vaccination with a single-dose vaccine and then received a booster dose after February 1st. The new output will display the total number of doses received in relation to the required number, in the format 2/1, 3/1, and so on.
The alteration was made to distinguish between persons who received a booster dose of a two-dose vaccine after receiving a single-dose vaccine and those who finished a primary series of two-dose vaccines.
This technical change was required to allow persons who received a booster dose, such as Janssen vaccination, to receive a correct standardized electronic validation in all countries participating in the EU digital COVID certificate as a booster vaccination certificate, taking into account changes in the validation method, and the validity of the EU COVID certificate when crossing the border, which takes effect on February 1st, 2022.
We encourage all citizens who have received an extra booster dose of vaccine after a single dose (e.g. Janssen) to apply for EU COVID certification after February 1st, 2022, either through the eGrađani system or at physical issuing facilities, to acquire certificates with the longest expiry date.
We'd like to remind you that the number of EU digital COVID certificates that can be issued is unlimited. There is also no limit to the number of valid EU COVID certificates that can be stored in the CovidGO mobile app's wallet.