“Easy... Just Google it.”
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Naturally I did that before I asked the question.
I found nothing that answers it.
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“In the case of preparing for Ebola, keep in mind that the Ebola virus strands can be as small as .02 microns in diameter, which are smaller than 3 microns. That said, the virus can permeate the filtered masks by a carrier such as (water molecules, bodily fluids, etc.). The best bet in assuring your family’s safety against Ebola is with N100 or P100 mask. Further, investing in other pandemic supplies would also be worthwhile.”