The words provided are:
- prevalent
- virulence
- effluvia
- pathology
One can come up with many combinations. Some possible ways of using all of those in a sentence are:
When I was talking about a prevalent pathology in the reason, a colleague of mine brought in new information about a virus which caused effluvia
A known virulence can evolve to a prevalent pathology that causes effluvia.
Effluvia is a symptom of a pathology caused by a prevalent virulence.