USP 32-NF 27 is official at this time and remains official until further notice
USP 33-NF 28, which was released on November 1, 2009 and recalled on January 8, 2010, was not scheduled to become official until May 1, 2010 and should not be used. The current standards in USP 32-NF 27 can be used with confidence.
Other USP publications related to USP-NF are not affected by this recall - They include
USP Dietary Supplements Compendium
Food Chemicals Codex, sixt edition, and its supplements
USP Pharmacists' Pharmacopedia, secon edition and its supplements
The 2009 USP Dictionary