MEDLINE®/PubMed® Year-End Processing Activities

Other pertinent articles: What's New for 2009 MeSH MEDLINE/PubMed Year-End Processing Activities 2009 MeSH Now Available MEDLINE Data Changes — 2009 PubMed Notes — 2009 Newly Maintained MEDLINE for 2009 MeSH Now Available in PubMed

T he National Library of Medicine® (NLM®) is currently involved in MEDLINE year-end processing (YEP) activities. These include changing the Medical Subject Headings (MeSH®) and Supplementary Concept Substance Names on existing MEDLINE citations to conform with the 2009 version of MeSH, and other global changes.

Important Dates

• November 19, 2008: NLM expects to temporarily halt the addition of fully-indexed MEDLINE citations to PubMed.
  
  
• Mid-December 2008: The PubMed MEDLINE citations, translation tables, and the MeSH database will have been updated to reflect 2009 MeSH.

For details about the impact on searching from November 19 to mid-December, see: Annual MEDLINE®/PubMed® Year-End Processing (YEP): Impact on Searching During Fall 2008.

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

MEDLINE®/PubMed® Year-End Processing Activities. NLM Tech Bull. 2008 Sep-Oct;(364):e7.