Comeback Species✓✓ 2 independent sources
Guinea worm disease: from 3.5 million cases to single digits
~3.5M cases (20 countries) in the mid-1980s → 30 human cases reported globally in 2017
The CDC and The Carter Center report a 99.99% reduction since the 1980s, driven by behavior change and water filtration. Only 30 human cases remained globally by 2018.
Guinea worm cases plummeted from 3.5 million to just 30 in 2017, eradicated without vaccines or cures.