What is a pathogen? Provide several examples.
2. Contrast Describe the difference between an emerging and re-emerging
disease. Provide several examples of each.
3. Think Critically Hypothesize why a disease that was once on
the decline might re-emerge.
Concepts Compared with travel in the 1800s, how would current worldwide
travel affect the transmission of disease?
5. Use the Internet What are some advantages and disadvantages
of getting information on disease research by way of the internet rather
than from textbooks or an encyclopedia?