Historical clue formulations

• Disease for which China's Tu Youyou discovered a lifesaving treatment, earning her a Nobel Prize — 2026-06-03
• What the Mosquirix vaccine targets — 2025-07-20
• Disease that was the subject of the second Nobel Prize in Physiology or Medicine (1902) — 2025-02-23
• Illness that tonic water was invented to treat — 2020-08-13
• Central American danger — 2014-08-15
• Modern term for "Roman fever" — 2014-06-12
• Fever cause — 2013-02-24
• Tropical woe — 2008-01-30
• Sub-Saharan scourge — 2006-01-14
• Tropical woe — 1998-02-24
• "Bad air," literally — 1996-09-15