@CNN: The spread of the plague during the Black Death that killed millions was fueled by humans, not rodents, as previously believed, a new study has found https://t.co/rPypVFAKtx https://t.co/Lr6TTNBeR3

@CNN: The spread of the plague during the Black Death that killed millions was fueled by humans, not rodents, as previously believed, a new study has found https://t.co/rPypVFAKtx https://t.co/Lr6TTNBeR3