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Please everyone note the difference between Marburg and another killer virus (clue: it's one that hit the headlines in the 1980s).
Marburg is an example of a "real" virus. It can be isolated, and it's epidemiology (how it spreads) is that of a virus - it spreads geometrically though a population until immunity or host-scarcity stops it.
The other virus of which I speak is a "fake" or "made-up" virus.
It has a non-viral epidemiology. It stays within at-risk populations and stays chronic within those populations for years. This is the epidemiology of toxin exposure, or of a deficiency disease.
Also, deaths caused by this other virus are strongly confined to those persons in receipt of medication against it - an indicator that iatrogenic posioning rather than a virus is the cause.
Another difference between "real" and "fake" viruses is that fake viruses require enormous media campaigns and mountains of dubious statistics to support them in the public consciousness. Real viruses need no help at all.
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