MEDLINE reload update for ProQuest Dialog

MEDLINE^® is reloaded every year because the National Library of Medicine (NLM) re-indexes relevant documents from the whole database with changed medical terms. The MEDLINE database on ProQuest Dialog is in the process of being reloaded to accommodate changes to the MeSH Thesaurus. In mid-December the NLM completed its work on the annual reload and has started to supply new MEDLINE documents again. 2013 reload data was received from the NLM in mid-December and should be ready to load into production during January, along with the 2013 thesaurus.

Until then, the 2012 thesaurus remains in place in MEDLINE and ToxFile^®. The majority of records will still work with the 2012 thesaurus, but any new records with 2013 terms in them will not. This is our normal practice and should be familiar if you use MEDLINE regularly. If you need help adjusting your searches, please refer to the NLM's pages on new, changed and deleted terms at the following links:

MeSH vocabulary changes for 2013

• About MeSH changes

• Lists of data changed

• New Descriptors – 2013
• Changed Descriptors – 2013
• Deleted Descriptors – 2013
• New Descriptors by Tree Subcategory – 2013

JANUARY 2013

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