It is not contagious and does not involve any known pathogen.

It is not a known human pathogen.

Malaria is one of the oldest known pathogens, and began having a major impact on human survival about 10,000 years ago with the birth of agriculture.

It's not contaminated with anthrax or any other known pathogen or poison.

These figures are summed across the diseases to get the incidence of foodborne illnesses attributable to known pathogens.

This species is a known human pathogen: it can cause neonatal meningitis and potentially gastroenteritis.

In addition, the same technology could be used to synthesize known pathogens based on their published DNA sequences.

As indicated by the CDC's discovery, over 30 known pathogens are notorious for making people fall sick.

It is a known pathogen of the major grain crop maize.

Because there is no known pathogen for the disease and no test for it, cases cannot be confirmed definitively.