The 2019 summer version of the NLM Classification, now available, encompasses the systematic review of the following schedules: QW (Microbiology. Immunology) and QX (Parasitology). In addition to the systematic reviews of the QW and QX schedules, other minor additions and changes were made.

Summary Statistics for the 2019 Summer Edition

• 57 class numbers added
• 8 schedule outline headers added
• 109 class number captions or notes modified; indentation levels changed; group labels modified
• 19 schedule outline headers modified
• 42 class numbers canceled
• 3 schedule outline headers deleted
• 99 index main headings added
• 481 index entries modified
• 115 index headings deleted

Class Numbers Added and Canceled

Class Numbers Added —2019 Summer Edition

New Number	Class Name	Former Number(s)
QS 132.1	[Anatomy. Histology. Laws] General coverage (Not Table G)	QS 132
QS 133	[Anatomy. Histology] Discussion of law (Table G)	QS 132
QS 133.1	[Anatomy. Histology. Discussion of law] General coverage (Not Table G)	QS 132
QV 762	Toxic plants	WD 500-530
QW 41	Microbial interactions. Host-microbial interactions (General or not elsewhere classified)	QW 4
QW 42	Microbial virulence	QW 730
QW 142.5.E5	Enterococcaceae	None
QW 160.5	[Viruses] Genetic aspects	QW 160
QW 168.5.F4	Filoviridae	None
QW 200	Unicellular eukaryota (General or not elsewhere classified)	QX 50
QW 205	Alveolata	None
QW 208	Apicomplexa	QX 123-140
QW 210	Coccidia	QX 123
QW 212	Sarcocystidae	None
QW 214	Haemosporida	None
QW 217	Ciliophora	QX 151
QW 220	Oligohymenophorea	None
QW 225	Amoebozoa	QX 55
QW 228	Lobosea	None
QW 230	Mycetozoa	None
QW 235	Diplomonadida	QX 70
QW 240	Euglenozoa	None
QW 243	Kinetoplastida	None
QW 250	Parabasalidea	None
QW 260	Stramenopiles	None
*QW 521	Allergy and immunology as a profession. Ethics. Peer review	QW 21
QW 525.5.I4	Immunoprecipitation	None
QW 569	Immunologic receptors	QW 570, etc.
QW 573.5.E7	Epitopes	QW 573
QW 573.5.N4	Neoplasm antigens	QW 573
QW 574	Antigen receptors	QW 573
QW 575.5.A8	Autoantibodies	QW 575
QW 575.5.I6	Immunoconjugates	None
QW 575.5.V5	Viral antibodies	QW 575
QW 608	Antigen-antibody complex. Immune complex diseases	QW 570; WD 308
QW 630.5.V4	Venoms	WD 400-430
QW 740	Immune system diseases (General or not elsewhere classified)	WD 300-330
QW 904	Food hypersensitivity	WD 310
QW 906	Drug hypersensitivity	WD 320
QW 910	Allergens (General or not elsewhere classified)	QW 900
QW 942	Immunization	QW 800-815
QX 47	Disease transmission. Disease vectors (General or not elsewhere classified)	QW 700
QX 199	Invertebrates (General or not elsewhere classified)	None
QX 700	Chordata (General or not elsewhere classified)	None
QX 710	Birds	None
QX 720	Mammals (General or not elsewhere classified)	None
QX 725	Artiodactyla	None
QX 730	Carnivora	None
QX 735	Rodentia	None
QY 60.I5	Insects [Laboratory Animals]	None
QY 60.M6	Mollusca [Laboratory Animals]	None
WA 697.1	[Food laws] General coverage (Not Table G)	WA 697
WA 700	Foodborne diseases (General or not elsewhere classified)	WA 695-722
WO 830	Bites and stings	WD 400-430
WS 276	Juvenile arthritis	WE 344-346
WZ 112.5.M2	[Collective biography by specialty] Microbiologists	WZ 112
WZ 112.5.P7	[Collective biography by specialty] Psychologists	WZ 112
WZ 112.5.Z7	[Collective biography by specialty] Zoologists	WZ 112

*QW 521 was a formerly canceled number that was reinstated.

 

Class Numbers Canceled—2019 Summer Edition

Canceled Number	Class Name	Now Classed in
QW 128	Bacteroidetes	QW 50
QW 145	Phototrophic bacteria	QW 131
QW 165.5.P2	Papillomaviridae	QW 166
QW 168.5.A7	Arboviruses	QW 160
QW 190	Bacterial and fungal spores	QW 51;QW 180
QW 660	Bacteriolysis	QW 52
QW 730	Virulence. Invasiveness	QW 42
QX 50	Unicellular eukaryota (General or not elsewhere classified)	QW 200-260
QX 55	Amoebozoa	QW 225-230
QX 70	Diplomonadida. Trichomonadida. Trypanosomatina	QW 235, QW 250, QW 243
QX 123	Apicomplexa	QW 208-214
QX 135	Plasmodium	QW 214
QX 140	Toxoplasma	QW 212
QX 151	Ciliophora	QW 217-220
QX 207	Trichuroidea	QX 203
QX 248	Trichostrongyloidea	QX 243
QX 271	Oxyuroidea	QX 203
QX 469	Scorpions	QL 548.7-.72
QX 471	Spiders	QL 458.4-.42
QX 483	Trombiculidae	QX 475
QX 650	Insect vectors	QX 500
QZ 65	Bacteria. Fungi. Viruses (General) [Pathogenicity]	With topic in QW
QZ 85	Animal parasites [Pathogenicity]	QX 199-735
WD 300	[Immunologic and Collagen Diseases. Hypersensitivity] General works	QW 740; QW 900
WD 301	[Immunologic and Collagen Diseases. Hypersensitivity] Handbooks. Resource guides	With topic in form number 39
WD 305	Autoimmune diseases (General)	QW 545
WD 308	Immune complex disease. Immunologic deficiency syndromes (General or not elsewhere classified)	QW 608;QW 740
WD 310	Food hypersensitivity	QW 904
WD 320	Drug hypersensitivity	QW 906
WD 330	Serum sickness	QW 608
WD 400	[Animal poisons] General works	QW 630.5.V4
WD 401	[Animal poisons] Handbooks. Resource guides	With topic in form number 39
WD 405	Marine forms	QW 630.5.V4
WD 410	Reptiles	QW 630.5.V4
WD 420	Spiders. Scorpions. Centipedes. Leeches	QW 630.5.V4
WD 430	Insects	QW 630.5.V4
WD 500	[Plant poisons] General works	QV 762; WA 700
WD 501	[Plant poisons] Handbooks. Resource guides	With topic in form number 39
WD 505	Ergotism	WA 700
WD 515	Favism	WA 700
WD 520	Mushroom poisoning	WA 700
WD 530	Milk sickness	WA 700

 

19th Century Class Numbers Added

New Number	Class Name	Former Number(s)
QWB	Animal Poisons	WDC

 

19th Century Class Numbers Canceled

Canceled Number	Class Name	Now Classed in
WDB	Hypersensitivity	QWA
WDC	Animal poisons. Plant poisons	QWB; QVB

Systematic Reviews for the 2019 Summer Edition

Highlights from the QW (Microbiology. Immunology) Review

The QW analysis revealed some inconsistency and overlap between parts of the QW and WD (Disorders of Systemic, Metabolic or Environmental Origin, etc.) schedules. For example, both QW and WD had areas with the header Hypersensitivity. Since Hypersensitivity is an immunological response, it is preferable to classify all the works in the QW Immunology Section.

A major partial review of the WD schedule was conducted to consolidate certain subjects in the QW and other schedules. As a result, several WD class numbers were canceled and some new QW numbers were created. Also, two 19th century schedule numbers were made obsolete: WDB Hypersensitivity and WDC Animal poisons. Plant poisons.

Two new numbers were created in other schedules: QV 762 Toxic plants and WA 700 Foodborne diseases (General or not elsewhere classified).

Highlights from the QX (Parasitology) Review

The analysis revealed that, although the QX schedule is labeled as Parasitology, it contained numbers for many different organisms some of which are not parasites. For example, QX 675 indicates it is for Mollusca, but not all Mollusca are parasites. A work on the biology of the squid should not be classed in QX but in the Library of Congress QL classification. As a result of the analysis, “Disease Vectors” was added to the QX Schedule Header to indicate this schedule is about invertebrates and their relationship to medicine. Several new class numbers were created for specific invertebrates. The class numbers in the section on unicellular Eukaroyta were cancelled and reclassed in new numbers in the QW schedule. Related index terms were updated to reflect the change in classification and to provide LC classification when not medically related.

Other 2019 Summer Edition Changes

Examples of additional changes made:

Classification of Laws Related to Food or Beverages

• WA 697 Pure food laws was broadened to include laws and discussion of laws related to specific types of foods or beverages. It now has a (Table G) annotation to allow for geographic breakdown. WA 697.1 was created for works with no geographic breakdown
• The notes at WA 32, WA 33, WA 701, and WN 612 were adjusted to provide guidance about classification of laws related to food or beverages
• Several food index terms were modified to provide guidance about the classification of food legislation

Classification of Laws Related to Anatomy

• QS 132 Laws concerning dissection. Discussion of laws was broadened to include laws on anatomy. It now has a (Table G) annotation to allow for geographic breakdown. QS 132.1 was created for works with no geographic breakdown
• QS 133 and QS 133.1 were created for discussion of laws on anatomy

Index Changes for Class numbers that Only Point to a Main Schedule Number

A project was conducted to eliminate alpha only class numbers from the index. Where a specific class number or range was available, it was added. Otherwise, appropriate subindex terms were added with specific class numbers. For example, Bible BS was changed to Bible BS 1-680. Eye WW had the alpha only removed and a subindex term General WW 100 added to the list of subindex terms.

Table G Addition

GH6--Holy Roman Empire was added.

To learn more, see the NLM Classification homepage.

The PDF version will be updated with 2019 winter and summer classification data by the fall of 2019.