[No new polio cases in the semester ending] 30 June 2021

Created by Bruno Parga on 2017-12-23; known on 2023-01-01; judged wrong by Bruno Parga on 2021-07-01.

• Bruno Parga estimated 90% on 2017-12-23
• Bruno Parga estimated 4% on 2019-01-01
• Bruno Parga   judged this prediction wrong on 2021-07-01.