Friends came back from a Russia last century and gave us a big hug. It took more than 6 months to get rid of the scabies infection. We cleaned ourselves, washed all clothes and bedding in very hot water. Then a child would find a jacket they had dropped behind the couch or something, wear it and again have scabies. What a nightmare of repeat attacks.
Scabies requires a medication and laundering everything in hot water. People who sleep on the ground (around here, homeless people, who are mostly men) tend to be disproportionately impacted.