A cruise ship outbreak. A newly sequenced Andes hantavirus strain. Social media panic. In this episode of The Unfiltered MD, Dr. Terry Simpson explains what the latest hantavirus sequencing actually shows — and what it does not.
Why do some viruses mutate constantly while others remain remarkably stable? What is the “rule of six” in measles? Why do influenza and COVID boosters need updating while measles vaccines continue working decade after decade? And how do tiny molecular changes in viral surface proteins determine whether a virus can unlock a human cell?
Dr. Simpson walks through the biology of viral mutations, receptor binding, purifying selection, zoonotic spillover, and why the shrinking world makes future pandemics inevitable — even if this hantavirus outbreak probably is not the next one.
This is not panic.
This is preparedness.
