Epidemiology of Infectious Disease

1. Act as insect vectors that carry a disease agent from its reservoir to humans
3. The presence of a living infectious agent on the body’s exterior surface, upon which a local reaction may be invoked
4. Cause diseases such as coccidioidomycosis, ringworm, and athlete’s foot
5. Agents multiply on the surface of the body without invoking tissue or immune response
7. The domain external to the host in which the agent may exist, survive, or originate
10. The capacity of the agent to cause overt disease in the infected host
13. An inanimate object laden with disease-causing agents
15. A living insect or animal involved with the transmission of a disease agent
16. The capacity of an agent to enter and multiply in a susceptible host and produce infection or disease
17. A genus of bacteria that can grow within cells
18. The medium that contains the agent
19. A person (or animal) who permits lodgment of an infectious disease agent under natural conditions

2. The ability of the agent to survive adverse environmental conditions
6. The ability of the agent to induce antibody production in the host
8. Concerns the resistance of the host to a disease agent
9. Refers to an agent’s capacity to induce disease in the host
11. Infectious diseases that are potentially transmittable to humans by vertebrate animals
12. Refers to the capacity of the agent to produce a toxin or poison
14. Include intestinal parasites such as roundworms, pinworms, and tapeworms