Strongyloides stercoralis in a dog litter: Evidence suggesting a transmammary transmission

Acta Trop. 2022 Jul:231:106465. doi: 10.1016/j.actatropica.2022.106465. Epub 2022 Apr 12.

Abstract

Strongyloides stercoralis is a soil-transmitted helminth with an unusual life cycle, causing canine and human strongyloidiasis, mainly endemic in tropical and subtropical areas. Following percutaneous or oral transmission of infective third-stage larvae in the vertebrate host, the parasite can cause autoinfection, leading to life-long infection. At present, the transmammary transmission was only assessed in experimentally infested dogs. Here, we provide observational evidence of S. stercoralis transmammary transmission in puppies suckling from a truffle dog from Central Italy, from where its presence was neglected.

Keywords: Geohelminths; Italy; parasite; soil-transmitted helminth; zoonosis.

MeSH terms

  • Animals
  • Dogs
  • Feces / parasitology
  • Italy
  • Larva
  • Life Cycle Stages
  • Strongyloides stercoralis*
  • Strongyloidiasis* / epidemiology