Standardise how the EUDCC should portray boosters

[amatzen]

Your Issue

The current HC1-scheme doesn't support documenting a vaccination process using two different vaccines, and those who are vaccinated using a single dose vaccine as their primary vaccination and a single jab of a two dose vaccine for their booster can't differentiate if their Health Certificate is a "fully vaccination" using the two dose vaccine or a "single dose + booster (a single jab of a two dose) vaccination".

I am myself vaccinated using the COVID-19 Vaccine Janssen, and had a single jab of Spikevax in november, and my EUDCC is portrayed as a 2/2 Spikevax, the same as a fully vaccination using Spikevax.

According to this article, the EU will introduce a 9 month validity for the "fully vaccinated" and require a booster vaccine for continued travel using the EUDCC beyond the 9 month validity period, and this can have some travel complications in the case presented above.

My suggestion is to introduce a standard of how the boosters should be portrayed in the scenario above, and I think of two solutions:

• Always display the original vaccine, and not the booster vaccine, in the EUDCC (if 2/2 COVID-19 Vaccine Janssen, it must be implicitted seen as a booster)
• Always show booster health certificates as a minimum of three doses, regardless of the practical number

[amatzen]

Thanks to @rawmain's reference to this issue, and the side note citing a press release from December 21, where the European Commission actually have given standard formats for booster shots in the EUDCC.

Boosters will be recorded as follows: 3/3 for a booster dose following a primary 2-dose vaccination series. 2/1 for a booster dose following a single-dose vaccination or a one dose of a 2-dose vaccine administered to a recovered person.