Columbia has three of the seven strains of the disease. Realize that those persons are NOT a permanent threat. Begin immediately with a lock down program. Do not let ANY animals, people, or products onto your place or near your animals unless you are sure what it is, where it came from, and have assurance from very reliable sources that it would be safe. Clean boots, clean clothes, showering and disinfectant foot baths can also reduce the risk from those persons who MUST enter.
Animal products can be as great a threat as a person or animal.
These veterinarians conduct many investigations to check out potential FMD problems.