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MEDLINE/PubMed Year-End Processing Activities

Tybaert S. MEDLINE/PubMed Year-End Processing Activities. NLM Tech Bull. 2011 Sep-Oct;(382):e1.

September 01, 2011 [posted]

The National Library of Medicine® (NLM®) is currently involved in MEDLINE year-end processing (YEP) activities. These include changing the Medical Subject Headings (MeSH®) and Substance Names on existing MEDLINE citations to conform with the 2012 version of MeSH, and other global changes.

Important Dates

  • November 16, 2011: NLM expects to temporarily suspend the addition of fully-indexed MEDLINE citations to PubMed. Publisher-supplied and in process citations will continue to be added.
  • Mid-December 2011: PubMed MEDLINE citations, translation tables, and the MeSH database will have been updated to reflect 2012 MeSH.

For details about the impact on searching from November 16 to mid-December, see: Annual MEDLINE®/PubMed® Year-End Processing (YEP): Impact on Searching During Fall 2011.

For background information on the general kinds of changes made annually, see: Annual MEDLINE®/PubMed® Year-End Processing (YEP): Background Information.