Speculation
The assay.
Tanya is able to measure how fast the K18 levels change. Her level and
Saul's level may be elevated, but change very slowly over days. She has a few measurements from
Datu and can see that it is elevated and increasing rapidly.
The natural progression is a final destination of change, but like
Burt says, prepare for the worse and
hope for the best. Throughout history there is often a small population of people that can resist the disease. I can see it play out lots of different ways. Datu is fine. Datu has a partial change and recovers like a stroke victim. Datu dies, Datu escapes and joins ink. All of these are interesting and can drive the story forward.
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