Hey,
I like to wait a little while to allow new acquisitions to settle down. I would agree that a week or two, should be sufficient, before any handling is attempted. However, it could take a little longer depending on the animal. Don't be discouraged. You might want to cover the front of the cage or enclosure with a sheet of newspaper, to give it some privacy and quiet time. This helps with newly transported animals just introduced to a new environment. Sometimes the recalcitrance stems from the move into a new environment. Give it as much time as it will take, but work with it as much as possible. You might want to try using some gloves at first for the first week or so, until you feel confident that he or she, has settled down sufficiently enough to handle without fear of being bitten. Just my 2 cents.
-Angel
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"Until we lose our self, there is no way of finding our self."
-Henry Miller.