11. In the early 20th Century in the United States, what percentage of people who developed diphtheria died?



12. How does diphtheria spread?



13.What are two symptoms of diphtheria?


14. Name two ways that diphtheria can kill a person?



12. How do doctors treat diphtheria?



13. How is diphtheria prevented today?


14. What pest carries malaria?


15. Most Americans who develop malaria have done what?


16. If a person gets malaria what is the incubation period before the person shows symptoms of the disease?


17. What are three stages of malaria?

        1.

        2.

        3.





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