Hope is powerful I just wanted to pass on this bit from the NPR show previously posted on this thread: John Coffin, a molecular biologist at Tufts University, says scientists have tried to blame other viruses for chronic fatigue and been proved wrong. But this time the evidence is stronger. And he says a retrovirus could explain why chronic fatigue can last a lifetime. Prof. COFFIN: Retroviruses in general give rise to infections that persist indefinitely. That's for all retroviruses: HIV and HTOV and many other retroviruses. By and large, once an individual is infected, the infection does not go away. This much we know. And what we know is definitely reason for hope. Never mind the rumors.