Pardon my French, but that's a completely ass-backwards approach from the council. If we later find that the vaccines need boosters, so be it, maybe that's justification for an additional restriction. There's an argument against this (of the "give them an inch and they'll take a mile" variety[1]), but what's proposed is taking a mile and promising to maybe sometime walk some of it back at some point. How far? In response to whose data? The ongoing debate around the "lab leak" hypothesis should have you asking questions about how information is collected and decisions made, _particularly_ at the science/public policy boundary.
[1]: https://thezvi.wordpress.com/2021/04/09/covid-4-9-another-va... - Scroll down to/Ctrl-F for: "Or, you could raise the more generalized version of this objection. Also from the comments:"