Earlier this year, Portland saw an alarming spike in cases of shigellosis, which you probably recognize by its less-specific, historical name: dysentery. Why did an illness most closely associated with the Oregon Trail pop up in modern-day Portland? Today, executive producer John Notarianni talks with Oregonian homelessness and mental health reporter Lillian Mongeau the connection to our growing unsheltered homelessness crisis and the reason some well-meaning Portlanders seem to oppose the very simple measures that could help stop its spread.

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• OMSI

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