We're at 6 with a "healthy" dose of 10.

I have to say that it was deviously brilliant when they started saying that cash is dangerous because it could be a pathway for transmission of covid...
Source 1
Source 2

I also have a feeling that 7 will be arriving sooner rather than later. Check out The Commons Project Common Pass:

For global travel and trade to return to pre-pandemic levels, travelers will need a secure and verifiable way to document their health status as they travel and cross borders. Countries will need to be able to trust that a traveller’s record of a COVID PCR test or vaccination administered in another country is valid. Countries will also need the flexibility to update their health screening entry requirements as the pandemic evolves and science progresses. Airlines, airports and other travel industry stakeholders will need the same.

The Commons Project was established with support from the Rockefeller Foundation.

Hmmm...🤔