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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 15,410 ATS members (as of March 2, 2021) 14,314 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) 1143 1899 3042 1733 680 1309 43.03%
Behavioral Science & Health Services Research (BSHSR) 275 593 868 700 246 168 19.35%
Clinical Problems (CP) 2451 2616 5067 3288 1510 1779 35.11%
Critical Care (CC) 3842 2946 6788 5464 3231 1324 19.51%
Enviromental, Occupational and Population Health (EOPH) 453 745 1198 818 315 380 31.72%
Nursing (NUR) 129 63 192 167 114 25 13.02%
Pediatrics (PEDS) 1201 455 1656 1211 883 445 26.87%
Pulmonary Circulation (PC) 820 1671 2491 1890 593 601 24.13%
Pulmonary Infections and Tuberculosis (PI-TB) 994 2045 3039 1787 521 1252 41.20%
Pulmonary Rehabilitation  (PR) 257 562 819 397 109 422 51.53%
Respiratory Cell and Molecular Biology (RCMB) 901 1472 2373 1588 626 785 33.08%
Respiratory Structure and Function (RSF) 773 1858 2631 1684 447 947 35.99%
Sleep and Respiratory Neurobiology (SRN) 647 1057 1704 1036 405 668 39.20%
Thoracic Oncology 608 884 1492 973 400 519 34.79%
Genetics & Genomics (GG): 1162 members
Medical Education (Med Ed) 2813 members
Terrorism & Inhalation Disasters (TID) 533 members
Members with NO Assembly Affiliation 1096 members