As recently as 2008, though, Dubey was explaining that, based on his own previous research, «most cats only shed oocysts for about one week in their life.» (voxfelina.com)
Increased odds of oocyst shedding were detected in bobcats and unmanaged feral cats. (pubfacts.com)
Most sources say heating to a temperature of 150 ° F (66 ° C) held for thirty minutes kills Toxoplasma oocysts in meat as will freezing (about -18 °C or 0 °F). (2ndchance.info)