The National Library of Medicine (NLM) is experiencing delays in the publication of Index Medicus and the List of Journals Indexed for Index Medicus 2002 (LJI) which is usually shipped with the January issue of Index Medicus. NLM recently implemented a new data creation and maintenance system which references the data that are included in both of these publications. This has necessitated changes in the programs that produce them and the development of new procedures for ensuring that both are accurate and complete.
The December 2001 Index Medicus is the first issue to be produced using the new software. The layout of the publication has been preserved to the extent possible, but users may notice a slight variation in the placement of data or use of punctuation. NLM expects that subscribers should receive the December issue in late January 2002.
Subscribers to LJI will receive their copy with a forthcoming monthly shipment of Index Medicus. The January and February 2002 issues of Index Medicus are expected to be delivered in February 2002. Changes and improvements made to Index Medicus will be detailed in the 2002 preface. NLM regrets the inconvenience caused by these delays, but expects to return to the normal production schedule with the February Index Medicus issue.
NLM is pleased to announce that completed MEDLINE citations (fully MeSH-indexed and quality controlled) are now released from our data creation system on a schedule that permits PubMed users to see newly completed records five times a week (Tuesday-Saturday). Many of these completed records are replacing the in process records already in PubMed. This change enables us to make fully indexed MEDLINE records available sooner. Records from the first "daily" update appeared in PubMed on January 9, 2002. These same records are released to MEDLINE licensees Tuesday-Saturday.
In the past, MEDLINE had been updated monthly, moving to semi-monthly in April 1988 and then to weekly in June 1990. More frequent updating is a direct result of NLM's reinvention efforts for our MEDLINE data creation system and our PubMed database which is part of the Entrez search and retrieval system. NLM continues to strive to make our analysis of the literature available online as quickly as possible. Updates five times a week are a welcomed enhancement for our users.
The new heading Nanotechnology has been added to 2002 MeSH. Please see MeSH Update Information for details.
On February 4, 2002, a link to TOXNET (NLM's Toxicology Data Network) was added to the PubMed sidebar under Related Resources. For more information about TOXNET, please see Introducing the New TOXNET.
A new Web site on Biological Warfare, developed by the Division of Specialized Information Services at NLM, is now available. Please see the announcement at: http://www.nlm.nih.gov/news/sisbiolwar02.html for more information.
The NLM is pleased to announce that it has made available all reports issued by the US Public Health Service Surgeon General at http://profiles.nlm.nih.gov/NN/. This new site, which makes 70 digitized reports public, results from collaboration between the NLM and the Office of the Surgeon General.
Key MEDLINE indicator information is now available on the NLM Web site at http://www.nlm.nih.gov/bsd/bsd_key.html. Statistical data are summarized by fiscal year. Categories include total citations indexed for MEDLINE, citations created for MEDLINE by data entry method, searches done using PubMed and the NLM Gateway, the number of journal titles in MEDLINE and Index Medicus, and the number of retractions, errata, and comments made to citations.