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Assembly Membership

When a person becomes a member of the American Thoracic Society he or she is entitled to become a "primary member" of one Assembly and "secondary member" of two additional Assemblies.  Of the 15,781 ATS members (as of May 11, 2020) 14,465 have declared a primary Assembly.  Please see the list below for the numbers of primary members, secondary, International and primary & secondary members in each Assembly:

Assembly Primary Members Secondary Members Primary & Secondary Members Primary & Secondary
Members
(U.S. only)
Primary Members
(U.S. only)
International Members Percentage of International Members
Allergy, Immunology and Inflammation (AII) 1249 1907 3156 1797 730 1359 43.06%
Behavioral Science & Health Services Research (BSHSR) 291 568 859 697 249 162 18.86%
Clinical Problems (CP) 2389 2471 4860 3157 1472 1703 35.04%
Critical Care (CC) 3687 3065 6752 5465 3086 1287 19.06%
Enviromental, Occupational and Population Health (EOPH) 454 762 1216 828 314 388 31.91%
Nursing (NUR) 123 67 190 170 111 20 10.53%
Pediatrics (PEDS) 1180 468 1648 1252 915 396 24.03%
Pulmonary Circulation (PC) 890 1665 2555 1978 672 577 22.58%
Pulmonary Infections and Tuberculosis (PI-TB) 925 1850 2775 1703 504 1072 38.63%
Pulmonary Rehabilitation  (PR) 244 523 767 404 112 363 47.33%
Respiratory Cell and Molecular Biology (RCMB) 1042 1577 2619 1746 718 873 33.33%
Respiratory Structure and Function (RSF) 844 1837 2681 1738 504 943 35.17%
Sleep and Respiratory Neurobiology (SRN) 598 1072 1670 1035 366 635 38.02%
Thoracic Oncology 549 793 1342 874 369 468 34.87%
Genetics & Genomics (GG): 1170 members
Medical Education (Med Ed) 2367 members
Terrorism & Inhalation Disasters (TID) 494 members
Members with NO Assembly Affiliation 1316 members