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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 16,234 ATS members (as of August 17, 2020) 15,207 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) 1267 1972 3239 1851 751 1388 42.85%
Behavioral Science & Health Services Research (BSHSR) 301 594 895 721 260 174 19.44%
Clinical Problems (CP) 2502 2645 5147 3368 1542 1779 34.56%
Critical Care (CC) 3968 3136 7104 5754 3330 1350 19.44%
Enviromental, Occupational and Population Health (EOPH) 470 790 1260 856 324 404 32.06%
Nursing (NUR) 134 69 203 177 120 26 12.81%
Pediatrics (PEDS) 1271 482 1753 1314 963 439 25.04%
Pulmonary Circulation (PC) 913 1736 2649 2054 680 595 22.46%
Pulmonary Infections and Tuberculosis (PI-TB) 976 2014 2990 1814 522 1176 39.33%
Pulmonary Rehabilitation  (PR) 262 554 816 420 115 396 48.53%
Respiratory Cell and Molecular Biology (RCMB) 1050 1598 2648 1769 733 879 33.19%
Respiratory Structure and Function (RSF) 865 1942 2807 1811 517 996 35.48%
Sleep and Respiratory Neurobiology (SRN) 633 1091 1724 1070 393 654 37.94%
Thoracic Oncology 595 850 1445 945 399 500 34.60%
Genetics & Genomics (GG): 1238 members
Medical Education (Med Ed) 2712 members
Terrorism & Inhalation Disasters (TID) 529 members
Members with NO Assembly Affiliation 1027 members