I could not find a thread on this topic, so starting a new one. Moderators please merge if there already is a thread and accept my apologies .

I saw the sticky thread „Converting the US CDC Vaccine card to EU Immunization Pass with QR Code“, but what I need to know is how to convert a Swiss QR certificate to a valid US certificate, which I will apparently need when visiting restaurants in e.g. California.

or is the yellow WHO vaccination booklet valid?

I do not find any useful information on ca.gov or cdc.gov websites…Any help is appreciated.

TIA