How Polish professors let infected lice feed on them to avoid concentration camps in WWII

During the Nazi occupation of Poland, some intellectuals were able to avoid being sent to Nazi concentration camps by volunteering for the potentially deadly job of allowing typhus-infected lice to feed on them. The Lviv Institute for Study of Typhus employed over 4,000 'louse-feeders' — people who strapped wooden boxes containing hundreds of infected lice to their legs for 45 minutes daily to help produce typhus vaccines. — Read the rest
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