Koch's postulates were applied to a new emergent disease. A candidate caused disease in every injected healthy subject. What needs to happen next? Answers:
The candidate must be isolated from injected, healthy animals
Re-isolate the bacteria from the injected subject
More diseased animals have to be tested
The candidate must be isolated from injected, healthy animals
Bacteria from healthy and diseased animals must be compared
Tissue and filtrate from healthy subjects needs to be retested.