This may not be true. The spread of the Black Death from place to place was attributed to rats, getting on ships, getting off ships at the next port, hitching a ride with the merchandise, so the plague travels along roads. However, it is likely that the plague was spread by people more than by rats. Or, rather, people transporting goods with fleas in. The village of Eyam in Derbyshire got the plague in 1665 from a flea-infested bundle of second-hand clothing sent up from London.
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