Possible topic for graduate school in biostatistics

You may remember that I was keen on studying biostatistics a few weeks ago. Well this morning while taking a break from my public law course note review I picked up one of the books I borrowed on Biostatistics. This one is Chiang, Chin Long. An Introduction to Stochastic Processes and Their Applications (Huntington, NY: Robert Krieger, 1980). My topic idea is this: Statistical Risk Models for the Geographic Diffusion of Pandemics.