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Detector dogs are walking the halls of Massachusetts schools in search of COVID-19 photo 1

Detector dogs are walking the halls of Massachusetts schools in search of COVID-19 photo 2

Detector dogs are walking the halls of Massachusetts schools in search of COVID-19 photo 3

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Detector dogs are walking the halls of Massachusetts schools in search of COVID-19

Dogs searching for signs COVID-19 at a school in Bristol County, Massachusetts. (Photo: WJAR)

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