Research overview: the interplay of sylvatic and domestic cycles in Toxoplasma transmission

Toxoplasma is maintained in both domestic cycles centered on house cats and sylvatic cycles driven by wild felids, and the two intersect in complex ways. This overview surveys how domestic and wild transmission cycles of Toxoplasma connect, the exchange of parasite strains between them, and the implications for the diversity and virulence of strains in the environment. It examines the contribution of each cycle to overall environmental contamination, the emergence of atypical strains from sylvatic sources, and the relevance for human and wildlife exposure. The synthesis connects domestic and wild felid parasitology. It aims to help readers understand that Toxoplasma’s success rests on its maintenance across a continuum of cat hosts, where domestic and wild cycles together sustain a globally distributed parasite of remarkable strain diversity and ecological reach.