Academy Awards | United States Military Academy | Russian Academy of Sciences | National Academy of Sciences | American Academy of Arts and Sciences | Academy Award for Best Foreign Language Film | United States Naval Academy | United States Air Force Academy | Royal Academy of Music | Academy of Motion Picture Arts and Sciences | Brooklyn Academy of Music | Phillips Academy | Royal Military Academy Sandhurst | Phillips Exeter Academy | Chinese Academy of Sciences | British Academy of Film and Television Arts | National Academy of Engineering | Pennsylvania Academy of the Fine Arts | Academy of Fine Arts | British Academy | Academy Award for Best Picture | Bulgarian Academy of Sciences | Polish Academy of Sciences | Academy Award for Best Visual Effects | Pontifical Gregorian University | New York Academy of Sciences | Academy Award for Best Original Song | Jan Matejko Academy of Fine Arts | Sibelius Academy | Pontifical University of Saint Thomas Aquinas |
Szczeklik is a member of numerous scientific societies, such as the Pontifical Academy of Sciences in the Vatican and Royal College of Physicians in London, UK (honorary member), American Academy of Allergy Asthma and Immunology, European Academy of Allergy Clinical Immunology, European Respiratory Society, International Society of Thrombosis Haemostasis, Polish Academy of Sciences.
He was born in Rio de Janeiro, the eldest son of Carlos Chagas (1879-1934), noted physician and scientist who discovered Chagas disease, and brother of Carlos Chagas Filho (1910-2000), also a noted physician and scientist who was president of the Pontifical Academy of Sciences.