This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Currently, we are able to produce safe vaccines for many infectious diseases. As a result, smallpox has been eliminated worldwide, and polio and measles are targeted. Most childhood diseases, which caused numerous deaths as recently as the first half of the 1900s, are rare in this country today due to vaccines. Not all diseases can be prevented by vaccines. There is no vaccine for AIDS. No vaccines are available for chlamydias, fungi, protozoa, or helminths. Other vaccines, such as those for cholera and typhoid fever, provide less than complete protection and last a relatively short time....
View Full Document
- Fall '09