Historical clue formulations

• Nationalism, per Einstein — 2017-07-21
• Etiologist's study — 2015-12-19
• Etiologist's study — 2014-01-19
• Affliction — 2002-08-24
• Rot — 1995-05-19
• Medical school subject — 1995-04-16
• Epidemiologist's concern — 1994-05-13