Earlier conjecture that revivification occurred only in humans was premature.
Per earlier experiments, exposure introduces a persistent, low level infection in all mammal subjects, but quickly enters a form of stasis and seems to go dormant.
In most of our experimental subjects this has been enough to trigger mutagenicity, but not revivification.
New tests on a wider range of subjects seem to suggest that larger mammals - dogs and monkeys, thus far - are susceptible to both effects.