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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 15,502 ATS members (as of June 3, 2021) 14,577 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) 1171 1928 3099 1781 703 1318 42.53%
Behavioral Science & Health Services Research (BSHSR) 285 623 908 739 258 169 18.61%
Clinical Problems (CP) 2446 2676 5122 3326 1510 1796 35.06%
Critical Care (CC) 3802 2914 6716 5389 3196 1327 19.76%
Enviromental, Occupational and Population Health (EOPH) 463 765 1228 845 333 383 31.19%
Nursing (NUR) 118 69 187 165 105 22 11.76%
Pediatrics (PEDS) 1235 454 1689 1240 911 449 26.58%
Pulmonary Circulation (PC) 832 1642 2474 1854 587 620 25.06%
Pulmonary Infections and Tuberculosis (PI-TB) 1007 2080 3087 1781 511 1306 42.31%
Pulmonary Rehabilitation  (PR) 255 577 832 392 105 440 52.88%
Respiratory Cell and Molecular Biology (RCMB) 907 1468 2375 1578 620 797 33.56%
Respiratory Structure and Function (RSF) 793 1854 2647 1690 449 957 36.15%
Sleep and Respiratory Neurobiology (SRN) 647 1048 1695 1029 394 666 30.29%
Thoracic Oncology 616 877 1493 961 393 532 35.63%
Genetics & Genomics (GG): 1205 members
Medical Education (Med Ed) 2946 members
Terrorism & Inhalation Disasters (TID) 523 members
Members with NO Assembly Affiliation 925 members