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World War II's Warsaw Ghetto Holds Lifesaving Lessons for COVID-19 - Scientific American

Residents’ medical organizations and citizen self-help networks within the Warsaw Ghetto taught health education courses, and the lectures sometimes attracted more than 900 people. An underground university taught medical students. Scientific research on starvation and epidemics was even carried out. The model Stone and his team used for the epidemic’s trajectory indicated that without steps to fight the disease, the number of people infected would have been two to three times greater.