Leprosy is a chronic disease infectious between humans that attacks the skin, nerves and mucous membranes. No-one is thought to have caught it inside the UK for 70 years but it’s still endemic in many parts of the world.

Armadillos carry it and are suspected of passing it on to humans. Some modern red squirrels in the UK also have it, but there has never been a reported case of transmission to humans and experts say the risk is very low.

The researchers studied 25 human and 12 squirrel samples.

The human remains came from a Winchester leprosarium (hospital for people with leprosy) and the squirrel remains from a nearby pit used by furriers.

The study is published in the journal, Current Biology.