2. Explain how the bacterium is attenuated in the Vivotif vaccine and why this attenuation prevents the the bacteria in the vaccine from causing typhoid fever. (Note: You will find the answer in the product insert for the drug under âClinical Pharmacology.â Be specific and thorough in your response.)
4. The Typhim Vi® vaccine is a(n) _____ vaccine.
a. sub-unit
b. inactivated
c. attenuated
5. Explain why re-immunization with the Vivotif® vaccine is recommended every five years, but is recommended every two years for the Typhim Vi® vaccine. (Note: Use your knowledge of immunology to answer this question).
Helpful Links:
Typhoid Vaccine Information
⢠Immunization Action Coalition Click on âTyphoid.â http://www.immunize.org/fda/
⢠World Health Organization [WHO] Click on âTyphoidâ http://www.who.int/immunization/diseases/en/