Since "Tugastream" is likely a variation or shorthand for the (a major tributary of the Savannah River in Georgia, USA) or a specific localized study site, here is a breakdown of the most helpful type of paper regarding this topic and what it likely contains.
This A-list ensemble suggests that 28 Years Later will lean heavily into the "prestige horror" category, focusing as much on human drama and societal collapse as it does on visceral scares. What is the Plot of 28 Years Later? tugastream 28-years-later