They do not need to be quarantined separately, you only need to separate them from your established snakes. That is not to say that they should be kept in the same enclosure, but they could all be in the same rack, and your established snakes in another rack (or whatever you house them in)
I would only work with your established snakes one day, then the next only work with the new ones. this minimizes contamination between the 2 groups.
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