“…Of these animals, 53 were subjected to a bioassay and 37 (69.8%) were positive. In São Paulo state, 25.3% (119/470) and 40.0% (80/200) prevalence were found among stray cats (SILVA et al, 2002;MEIRELES et al, 2004) and 17.7% (44/248) and 19.4% (37/191) among house cats (LUCAS et al, 1999;LANGONI et al, 2001), similar to the 20.9% prevalence in this study. Domiciled cats with free access to the external environment have the opportunity to hunt small prey, making them more susceptible to T. gondii infection (ROBERTSON, 1998).…”