The ASX healthcare sector lost 6% in a single day on Wednesday, its worst session in years. The trigger was Cochlear (ASX:COH), which fell 40.7% to a decade-low of A$99.58 after slashing its profit guidance. The damage spread well beyond Cochlear itself, with CSL (ASX:CSL) down 5.7%, ResMed (ASX:RMD) off 2.5%, and most other healthcare…
